JP2002221564A - Gps position detection device having function for specifying approximate position information by using environmental temperature and gps position detection system utilizing communication network - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a GPS position detection device capable of calculating approximate position information based on the present air temperature, and executing GPS positioning in a short time based on the approximate position information. SOLUTION: This GPS position detection device having a function for executing the GPS positioning by using the approximate position information is equipped with a temperature sensor 1b for measuring the environmental temperature, a real-time clock 1c for clocking the month, the date and the time, an air temperature database 1d of each region wherein at least the temperatures corresponding to each month and date in each region classified plurally and position information of the regions are preserved, and a GPS positioning operation processing part A for retrieving the nearest region to the environmental temperature measured by the temperature sensor on reference to the air temperature database of each region based on clocking by the real-time clock 1c when receiving a GPS positioning command, and specifying the position information of the retrieved region as the approximate position information, to thereby execute the GPS positioning.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a GPS position detecting device having a function of specifying approximate position information using an environmental temperature, and a GPS position detecting system using a communication network.

[0002]

2. Description of the Related Art Weak high-frequency radio waves (hereinafter, referred to as GPS signals) transmitted from a GPS satellite (hereinafter, also referred to as "satellite") orbiting the earth by pseudo-noise encoding are received, and the GPS signals are transmitted to the ground. GPS position detecting devices, which decode the time of arrival, time information and navigation messages contained in GPS signals, and accurately determine position information on the earth, have become widely used with the recent development of communication technology. Have been.

[0003] Such a GPS position detecting device needs to capture at least four or more GPS satellites orbiting the visible space and decode the GPS signals. After synchronizing the timing of the key code assigned to each satellite with the noise-encoded high-frequency radio wave and demodulating it, the navigation message is decoded and collected.

When performing GPS positioning, the GPS position detecting device must find a visible satellite and determine a satellite to be tracked immediately after the power is turned on. However, it is necessary to determine a satellite to find and capture a visible satellite. If information such as approximate approximate time and terminal approximate position information is given from other sources, the GPS position detecting device will focus on satellites that can be tracked, receive navigation messages from those satellites, decode them, The time required for positioning can be reduced.

[0005] A GPS position detecting device using the position measured last time as the terminal approximate position information for capturing GPS satellites has already been developed.

[0006]

However, in such an apparatus, if the distance between the previous positioning position stored in the terminal and the position to be located this time is within about 300 km, satellite acquisition can be performed in a short time. However, if the distance is shifted by 500 km or more, it may take more time than when the approximate position is not used.

The present invention has been made in order to solve such a problem, and it is possible to acquire the approximate location information of a terminal based on the current temperature, and to quickly obtain G based on the approximate location information.
It is an object of the present invention to provide a GPS position detecting device capable of performing PS positioning.

[0008]

According to a first aspect of the present invention, there is provided a GPS position detecting apparatus having a function of performing GPS positioning using approximate position information. It has such a configuration.

That is, this GPS position detecting device
At least a temperature sensor that measures the environmental temperature, a real-time clock that measures the month, day, and time, and at least the temperature corresponding to each month and day in each of the divided areas and the location information of those areas With reference to the temperature database of each area and the temperature database of each area, the area closest to the environmental temperature measured by the temperature sensor is searched, and the position information of the searched area is specified as the approximate position information, and the GPS positioning is performed. And a GPS positioning calculation processing unit that performs the following.

[0010] Upon receiving the GPS positioning command, the GPS positioning operation processing unit refers to the temperature database based on the environmental temperature measured by the temperature sensor and the current month and day indicated by the real-time clock, and performs the date and time of that month. Since the area closest to the environmental temperature is searched, the location information of that area is
GPS positioning can be performed by specifying as approximate position information (information combining latitude and longitude on the earth, etc.) used for PS positioning.

[0011] Even if the user carries and moves the GPS position detecting device, the GPS positioning calculation processing section specifies the approximate position corresponding to the current location from the average temperature stored in the temperature database. For the positioning command, the GPS positioning using the approximate position information is started only by operating the operation switch.

The time information read from the real-time clock by the GPS positioning calculation processing unit depends on the degree of detail of the temperature database.
When the average temperature data corresponding to the day and time is stored, the GPS positioning calculation process reads the month, day, and time from the real-time clock, but the temperature database stores the average temperature according to the month and day for each region. When only data is stored, the GPS positioning calculation process may read the month and day from the real-time clock.

Further, the current time measured by the real-time clock can be used as it is as assist information for GPS positioning.

According to a second aspect, in the first aspect, the GPS
It is characterized in that the position detecting device has a structure in which the temperature sensor is integrated with the GPS antenna.

According to a third aspect of the present invention, there is provided a GPS position detecting system, comprising: a communication processing unit for performing necessary data communication with a communication terminal device accessed via a communication network; a temperature sensor for measuring an environmental temperature; When a command is received, using a pre-specified approximate position information, a GPS position detecting device having a GPS positioning calculation processing unit for executing GPS positioning, and a GPS position detecting device installed on a communication network and divided into a plurality of Comparison means for comparing a temperature database storing at least temperature corresponding to each month and day of the area and position information of the area, and an environmental temperature from the GPS position detecting device and temperature data stored in the temperature database. And a communication server having a data search unit having

When the GPS position detecting device receives the GPS positioning command, it accesses the communication server and transmits the environmental temperature measured by the temperature sensor. After comparing the environmental temperature transmitted from the position detecting device with the temperature data stored in the temperature database, searching for an area corresponding to the temperature closest to the environmental temperature transmitted from the GPS position detecting device , The approximate position information of the area is returned to the GPS position detecting device.

The location information of each area stored in the temperature database is preferably stored as information combining latitude and longitude in consideration of the convenience of GPS positioning, but is stored as house display information. Alternatively, a conversion table between the house display information and the latitude / longitude information may be provided on the GPS position detecting device side so as to convert and use it at the time of GPS positioning.

According to a fourth aspect of the present invention, there is provided a GPS position detection system, comprising: a communication processing unit for performing necessary data communication with a communication terminal device accessed through a communication network; a temperature sensor for measuring an environmental temperature; When a command is received, using a pre-specified approximate position information, a GPS position detecting device having a GPS positioning calculation processing unit for executing GPS positioning, and a GPS position detecting device installed on a communication network and divided into a plurality of It is configured by combining a temperature database that stores at least temperature corresponding to each month and day of the area and positional information of the area, and a communication server including temperature database creation / update means.

The communication server transmits the temperature database created and updated by the temperature database creating / updating means to the GPS position detecting device. When the GPS position detecting device receives the GPS positioning command, the transmitted temperature is transmitted. With reference to the database, an area closest to the environmental temperature measured by the temperature sensor is searched, and position information of the searched area is specified as approximate position information to execute GPS positioning.

According to a fifth aspect of the present invention, there is provided a GPS position detecting system, comprising: a communication processing unit for performing necessary data communication with a communication terminal device accessed through a communication network; a temperature sensor for measuring an environmental temperature; When a command is received, a GPS position detection device including a GPS positioning calculation processing unit that performs GPS positioning using the rough position information specified in advance, and a GPS position detection device that is distributed and installed in each region, It is configured by combining with a communication server installed on a communication network, which is linked to a plurality of temperature information providing local servers capable of providing at least temperature information.

When the GPS position detecting device receives a GPS positioning command, it accesses a communication server and receives outside temperature information from a temperature information providing local server installed in each region via the communication server. After that, from the outside temperature information, the local server that provides the temperature information closest to the environmental temperature measured by the temperature sensor is searched, and the position where the searched local server that provides the temperature information is installed is specified as the approximate position information. Then, the GPS positioning is executed. The outside air temperature information provided by the local server is provided by providing an outside air temperature sensor to the local server and providing measured data, and by further accessing the nearby weather station from the local server as appropriate and receiving the provided outside air temperature data. May be provided.

In this system, the communication server arranged on the network relays the information sent from the temperature information providing local server.
Temperature information of each place can be obtained simply by accessing the communication server. The installation position information of the local server may be provided in advance in the GPS position detecting device with a conversion table between the identification information of the local server and the position information, and converted and decoded by the GPS position detecting device. When the device communicates with the local server, it may be provided from the local server.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the temperature information providing local server is distributed and installed in each area, and provides positioning correction information necessary for GPS positioning in each area. It consists of a GPS correction base station.

When the GPS position detection device receives a GPS positioning command, it accesses a communication server, and from the GPS correction base stations installed in each region through the communication server, obtains position information of the base station, Receives the outside temperature information together with the positioning correction information, and further searches for the GPS correction base station closest to the environmental temperature measured by the temperature sensor from the provided information. The installation position of the searched GPS correction base station is roughly determined. The information is specified, and GPS positioning is executed using the positioning correction information provided from the GPS correction base station.

In this system, in addition to the approximate position information, positioning correction information required for GPS positioning can be obtained from the GPS correction base station, so that quicker and more accurate GPS positioning can be performed.

The outside air temperature information provided by the GPS correction base station is provided by providing an outside air temperature sensor in the GPS correction base station and providing measured data, and by appropriately accessing a nearby weather station. External temperature data may be provided.

According to a seventh aspect of the present invention, in the GPS position detecting system according to any one of the third to sixth aspects, the GPS position detecting device has a structure in which a temperature sensor is integrated with a GPS antenna.

[0028]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an example of a main configuration of the GPS position detecting device.

The GPS position detecting device 1 receives a GPS radio wave received by a GPS antenna and converts the signal into an intermediate frequency signal. The GPS position detecting device 1 performs data processing and calculations required for GPS positioning. An arithmetic processing unit and a communication processing unit for performing two-way communication with a network such as a mobile phone network are provided. The GPS positioning arithmetic processing unit A is constituted by a CPU and its peripheral circuits. Specifically, from a GPS signal received by a GPS antenna and subjected to pseudo-noise encoding processing, a GPS signal processing unit for capturing a GPS signal from a specific orbiting satellite and extracting a navigation message is used. Decoding the retrieved navigation message, performing predetermined arithmetic processing, and calculating the latitude and longitude information.
It comprises an arithmetic processing unit and a general position calculating unit 1a for calculating general position information of a terminal used for performing signal acquisition in a short time.

The high-frequency processing section receives a high-frequency radio wave (RF signal) transmitted from the orbiting satellite via the GPS antenna 1e, converts this into a digital intermediate frequency (IF signal), and extracts it.

The GPS signal processing section is composed of a satellite signal acquisition processing section and a satellite signal tracking processing section. In the satellite signal acquisition processing section, pseudo noise coding is performed from four or more orbiting satellites necessary for GPS positioning and transmitted. Assigned to each orbiting satellite to capture the GPS signal
The search processing is performed by adjusting the timing of the / A code.
Lock the C / A code whose timing matches, and
Navigation messages are sequentially extracted from the PS signal.

In such a search process, if a satellite that can be tracked and its orbit information and clock information (the time at which the satellite is transmitted and the current time at the receiving location) are known, the satellite is transmitted to the GPS position detecting device 1. It is possible to determine whether the satellite is approaching or moving away from the satellite. In consideration of the Doppler effect, the frequency is shifted by a predetermined value (for example, 500 Hz) to extract the pseudo noise code of the satellite to be tracked. The navigation message (array signal of 0, 1) is extracted by synchronizing the coding pattern of the C / A code assigned to the.

The navigation message decryption / arithmetic processing unit measures the distance from the terminal on the ground to the satellite, the data decryption unit decrypts the navigation message extracted by locking the C / A code, and the measurement unit. It is provided with an arithmetic unit for calculating information on the latitude and longitude of the terminal on the earth from the pseudorange and the navigation message decoded by the data decoding unit.

The measuring unit obtains a pseudo distance between the captured satellite and the receiving location, and the data decoding unit extracts GPS time, clock correction value, satellite orbit information (ephemeris) from the navigation message, Is calculated.

The arithmetic unit calculates the latitude and longitude of the receiving location on the earth from the pseudo distance calculated by the measuring unit and the coordinate positions of at least four or more satellites calculated by the data decoding unit.

According to the present invention, in order to perform signal acquisition in a short time, the terminal outline position information for determining a trackable satellite is stored in advance in such a manner that temperature, season (month, day) and time can be accessed as keys. Is stored in the database. And it has a temperature sensor 1b for measuring the environmental temperature and a real-time clock 1c for measuring the time.

That is, the approximate position calculation unit 1a uses the GPS
The temperature is measured from the temperature sensor 1b provided in the position detecting device 1, the current time (month / day / hour / minute) is obtained from the real-time clock 1c, and the average temperature database 1d is searched using these two types of data as keys. Then, the latitude and longitude of the area matching or closest to the temperature are obtained.

FIG. 2 shows an example of the structure of the temperature database 1d.
Shown in The temperature database 1d stores the average temperature for the past several years for each month, day, and time, and searches for the average temperature at the current time (one vertical column in the figure) to find the closest temperature to the current temperature. Find the average temperature and determine the area. It should be noted that the temperature data is not limited to the average temperature, but may be the temperature measured in the last year.

Even if the user carries and moves the GPS position detecting device 1, the GPS positioning calculation processing section A can specify the approximate position corresponding to the current location from the average temperature stored in the temperature database 1d. Can start GPS positioning only by operating an operation switch for a GPS command.

FIG. 3 is a diagram showing an integrated module of the GPS antenna / temperature sensor.

Since the temperature sensor 1b composed of a thermistor bridge is integrated with the GPS antenna 1e, the temperature sensor 1b can be externally attached and the GPS position detecting device can be made compact.

It should be noted that the temperature sensor is not limited to such an integral type, but may be a separate type.

FIG. 4 is a system diagram showing the configuration of the GPS position detection system.

In this system, the GPS position detecting device 1
Numeral 0 denotes a communication server 2 connected via a communication network L. The communication server 2 is connected to a local temperature providing server 3 installed in GPS correction base stations located all over the country. ing.

The GPS position detecting device 10 includes a communication processing unit 10c for performing bidirectional communication with a network such as a mobile phone network, in addition to a high-frequency processing unit and a GPS positioning operation processing unit A. .

The communication server 2 includes a GPS position detecting device 10
When receiving the positioning command and accessing the communication server 2, it returns the current temperature of each area sent from the local server 3. The GPS position detection device 10 receives the temperature information by the communication processing unit 10c, and the approximate position calculation unit 10a searches for the temperature closest to the temperature measured by the temperature sensor 10b from the returned temperature information of each place. Then, the position of the area is calculated, and the position is calculated as the approximate position information.

As described above, the network assist type eliminates the need for the GPS position detecting device 10 to have a temperature database, so that a low-cost device can be provided to the user, and a large amount of database information can be updated. As a result, no communication occurs, so that battery consumption can be suppressed.

Further, positioning correction information such as almanac is received from the local server 3 via the communication server 2 at the same time, and is passed to the positioning calculation unit. In other words, if we improve the conventional network assist system a little,
The temperature information is also provided from the GPS correction base station, and the network is assisted in both the correction information and the approximate position information.

Here, the GPS position detecting device 10
Is provided with temperature information of each place based on the request, but is not limited to this, and may be provided periodically.

FIG. 5 is a system diagram showing the configuration of another GPS position detecting system.

In this system, the communication server 2 receives the average temperature information of each place regularly or irregularly from the communication terminal 4 such as a weather station, and stores and updates the average temperature information in the temperature database 2c by the updating means 2b.

When receiving the positioning command, the GPS position detecting device 11 measures the current temperature with the temperature sensor 11b and transmits this temperature to the communication server 2. In the communication server 2, the comparing means 2a uses the GPS unit 2a. The current temperature received from the position detecting device 11 is compared with the average temperature of each place stored in the database, a region having the closest temperature is obtained, and the approximate position information is returned to the GPS position detecting device 11.

As in the system 10 described above, the GPS position detecting device does not need to have a database, and
Since the communication server 2 collects the temperature of the whole country from the communication terminal device 4 of the weather station, the positioning can be executed by receiving the approximate position information based on the accurate temperature information. Further, since the communication server 2 calculates the approximate position information based on the temperature database 2c and the current temperature of the device 1, the GPS position detecting device 1 does not need a database, and the load of calculating the approximate position information of the device 1 is reduced. It can be reduced as much as possible.

FIG. 6 is a system diagram showing the configuration of yet another GPS position detecting system.

In this system, the communication server 2 stores the average temperature sent from the communication terminal 4 of the weather station in the database 2c, and stores the contents of the database 2c via the communication network L in the GPS position detecting device. 12 has been transmitted.

In the GPS position detecting device 12, the communication processing section 12c receives the temperature data of the database and stores it in the temperature database 12d (see FIG. 2). Then, when receiving the positioning command, the approximate position calculating unit 12a searches the temperature database 12d with the current temperature measured by the temperature sensor 12b, calculates an area having a temperature closest to the current temperature, and based on the approximate position information. Execute positioning.

As in the system 11 described above, the temperature of the whole country can be collected simply by accessing the communication server 2, so that the GPS correction base station (local server 3)
It is sufficient to transmit only the positioning correction information, and it is not necessary to add a device or a system for measuring and transmitting and receiving the temperature.

[0059]

As can be understood from the above description, the device and system of the present invention specify the approximate position information of the terminal and execute the GPS positioning by using the simple method of measuring the air temperature. A GPS position detection device capable of positioning in a short time can be provided to a user at low cost.

Even if the user carries and moves the GPS position detecting device, the user can specify the approximate position corresponding to the current location from the temperature stored in the temperature database, so that the GPS can be quickly performed.
PS positioning becomes possible.

Further, according to the GPS position detecting system of the network assisted type according to the third to seventh aspects,
Since the PS position detecting device can specify the approximate position information required for GPS positioning only by transmitting the environmental temperature measured by the temperature sensor to the communication server, the function of this communication server is provided in a base station such as a cellular phone network. If it does, communication charges can be reduced.

In the apparatus and system according to the second and seventh aspects, since the temperature sensor for measuring the air temperature is integrated with the GPS antenna, the apparatus can be made compact without taking up space. In particular, the wiring required for the temperature sensor and the GPS antenna can be combined at one place, and the complexity can be eliminated.

According to the GPS position detecting system of the third aspect, since the communication server specifies the approximate position information based on the temperature database and the current temperature of the device, the GPS position detecting device does not require a database. , The configuration of the GPS position device can be simplified.

According to the fourth aspect, the temperature database of the communication server is updated based on the information sent from the weather station or the like. Therefore, the GPS position detecting device is based on the most reliable latest temperature information. Thus, the approximate position information can be specified.

According to the fifth and sixth aspects, since the communication server collects the temperature information by the temperature information providing local servers installed all over the country, it is not necessary for the GPS position detecting device to have a temperature database. Therefore, G
The configuration of the PS position detecting device can be simplified and provided at a low price. In addition, a power saving type device can be provided in which communication due to updating of a large amount of databases does not occur and battery consumption is suppressed.

In particular, since the GPS correction base station functions as a local server, the GPS correction base station can be networked with the GPS correction base station by adding only a slight improvement to the conventional network assisted position detection system. A highly reliable GPS positioning system can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of a main configuration of a GPS position detecting device according to the present invention.

FIG. 2 is a diagram showing an example of the structure of a temperature database.

FIG. 3 is a diagram showing an integrated GPS antenna / temperature sensor module.

FIG. 4 is a system diagram showing a configuration of a GPS position detection system of the present invention.

FIG. 5 is a system diagram showing a configuration of another GPS position detection system of the present invention.

FIG. 6 is a system diagram showing the configuration of yet another GPS position detection system according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 GPS position detection apparatus A GPS positioning calculation processing part 1a Schematic position calculation part 1b Temperature sensor 1c Real time clock 1d Temperature database (for apparatus) 1e GPS antenna 2 Communication server 2a Temperature comparison means (data search means) 2b Temperature database creation / update means 2c Temperature database (for communication server) 3 Local server 4 Meteorological station communication terminal 10-12 GP supporting network assist
GPS position detecting device used in S position detecting system 10c-12c Communication processing unit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Junichi Suzuki 1048 Kazuma Kadoma, Osaka Pref.Matsushita Electric Works, Ltd. Inventor Masahito Fukuda 1048 Kadoma Kadoma, Kadoma City, Osaka Pref. (72) Inventor Koji Sakamoto 1048 Kadoma Kadoma, Kadoma City, Osaka Pref. 1048 Matsushita Electric Works Co., Ltd. ) Inventor Kazuhiro Kawamoto 1048 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd. F-term (reference) 2 F029 AB07 AC02 AC06 AD01 5J062 AA02 AA13 CC07 DD05 FF00 GG02 HH04

Claims (7)

[Claims] 1. A GPS position detecting device having a function of performing GPS positioning using approximate position information, comprising: a temperature sensor for measuring an environmental temperature; and a real-time clock for measuring month, day and time. The temperature corresponding to each month and day in each region and the location information of those regions are stored at least based on the temperature database of each region, and when a GPS positioning command is received, based on the timing of the real-time clock. A GPS positioning device that searches for a region closest to the environmental temperature measured by the temperature sensor with reference to the temperature database of each region, specifies the position information of the searched region as rough position information, and executes GPS positioning. A GPS position detecting device, comprising: an arithmetic processing unit. 2. The GPS position detecting device according to claim 1, wherein the GPS sensor detects the temperature sensor by a GPS.
A GPS position detection device that is integrated into an antenna. 3. A communication processing unit for performing necessary data communication with a communication terminal device accessed through a communication network, a temperature sensor for measuring an environmental temperature, and a GPS positioning command when the GPS terminal receives a GPS positioning command. GPS position detection device equipped with a GPS positioning calculation processing unit that executes GPS positioning using the approximate position information, and a temperature corresponding to each month and day in each of a plurality of divided areas installed on a communication network. And a temperature database storing at least location information of those areas, and the GP
A communication server having a data search unit having a comparison unit for comparing the environmental temperature from the S position detection device with the temperature data stored in the temperature database. The GPS position detection device includes: When receiving the GPS positioning command, the communication server accesses the communication server and transmits the environmental temperature measured by the temperature sensor.
After comparing the environmental temperature transmitted from the PS position detecting device with the temperature data stored in the temperature database, searching for an area having a temperature closest to the environmental temperature transmitted from the GPS position detecting device A GPS position detecting system using a communication network, wherein position information of the area is returned to the GPS position detecting device. 4. A communication processing unit for performing necessary data communication with a communication terminal device accessed via a communication network, a temperature sensor for measuring an environmental temperature, and a GPS positioning command when a GPS positioning command is received. GPS position detection device equipped with a GPS positioning calculation processing unit that executes GPS positioning using the approximate position information, and a temperature corresponding to each month and day in each of a plurality of divided areas installed on a communication network. And a communication server including a temperature database storing at least location information of those areas, and a communication server including a temperature database creation / update unit. The communication server is created and updated by the temperature database creation / update unit. The above-mentioned G
When the GPS position detection device receives a GPS positioning command, the GPS position detection device searches for an area closest to the environmental temperature measured by the temperature sensor with reference to the transmitted temperature database. A GPS location detection system using a communication network, wherein the location information of the searched area is specified as rough location information and GPS positioning is executed. 5. A communication processing unit for performing necessary data communication with a communication terminal device accessed via a communication network, a temperature sensor for measuring an environmental temperature, and a GPS positioning command when the GPS terminal receives a GPS positioning command. A GPS position detection device having a GPS positioning calculation processing unit for performing GPS positioning using the approximate position information, and a plurality of GPS position detection devices provided for each region and capable of providing at least outside temperature information in each region. It is configured in combination with a communication server installed on a communication network linked to a temperature information providing local server, and the GPS position detecting device accesses the communication server when receiving a GPS positioning command, After receiving the outside temperature information from the temperature information providing local server installed in each of the above regions via the communication server, From the outside air temperature information, a temperature information providing local server closest to the environmental temperature measured by the temperature sensor is searched, and an installation position corresponding to the searched temperature information providing local server is specified as the approximate position information. A GPS positioning system using a communication network. 6. The temperature information providing local server according to claim 5, wherein the temperature information providing local server is configured by a GPS correction base station that is allocated and installed for each region and provides positioning correction information necessary for GPS positioning in each region. When the GPS position detecting device receives a GPS positioning command, the GPS position detecting device accesses the communication server, and, through the communication server, from a GPS correction base station installed in each region, an installation position of the base station, The outside temperature information is provided together with the positioning correction information, and further, the G closest to the environmental temperature measured by the temperature sensor from among them is provided.
A search is made for a PS correction base station, the installation position of the searched GPS correction base station is specified in the approximate position information, and the G
G using the positioning correction information provided from the PS correction base station
A GPS position detection system using a communication network, which performs PS positioning. 7. The GPS position detecting device according to claim 3, wherein the GPS sensor includes a GPS sensor.
A GPS position detection system using a communication network that has a structure integrated with the antenna.