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CN103185888A - Satellite positioning method based on satellite health information judgment - Google Patents

Satellite positioning method based on satellite health information judgment Download PDF

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CN103185888A
CN103185888A CN2011104443058A CN201110444305A CN103185888A CN 103185888 A CN103185888 A CN 103185888A CN 2011104443058 A CN2011104443058 A CN 2011104443058A CN 201110444305 A CN201110444305 A CN 201110444305A CN 103185888 A CN103185888 A CN 103185888A
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frequency
health
geo
satellites
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CN103185888B (en
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林木龙
何毅华
曹林
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Dongguan Techtop Microelectronics Co Ltd
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Abstract

一种基于卫星健康信息判断的卫星定位方法，所述卫星包括GEO卫星和非GEO卫星，所述方法包括：步骤一，接收一颗所述GEO卫星的信号，解调出所有卫星的健康信息；步骤二，判断解调出的所述健康信息，选择健康的卫星信号进行定位。采用本发明的技术方案后，卫星接收终端能够根据卫星的健康情况，优先选用工作状态正常的卫星发出的信号进行定位，从而提高定位的精度，缩短定位时间。

A satellite positioning method based on satellite health information judgment, the satellites include GEO satellites and non-GEO satellites, the method includes: Step 1, receiving a signal from one GEO satellite, and demodulating the health information of all satellites; Step 2, judging the demodulated health information, and selecting a healthy satellite signal for positioning. After adopting the technical solution of the present invention, the satellite receiving terminal can preferentially select signals sent by satellites in normal working state for positioning according to the health conditions of the satellites, thereby improving the positioning accuracy and shortening the positioning time.

Description

A kind of satellite positioning method of judging based on satellite health information
Technical field
The present invention relates to a kind of satellite positioning method, especially satellite positioning method of judging based on satellite health information of the Big Dipper 2 generation satellite navigation system.
Background technology
Beidou satellite navigation system is the Chinese independent development capability of implementing, the GPS (Global Position System) of independent operating.Its space segment comprises 5 satellites of the earth (GEO) and 30 non-geo satellites (MEO/IGSO).Geostationary orbit satellite (GEO) lays respectively at east longitude 58.75 degree, 80 degree, 110.5 degree, 140 degree and 160 degree.Non-geo satellite is made up of 27 middle circular orbit satellites (MEO) and 3 inclination geosynchronous satellites (IGSO).Along with improving and popularization of Beidou satellite navigation and positioning system, will be more and more universal based on the locating terminal of dipper system.Utilize at present in the technology that Big Dipper satellite signal positions, all be to adopt the method that receives the Big Dipper satellite signal location at random, if in the satellite-signal that receives, the satellite that has is in bad duty, use its satellite-signal that sends to influence the location of receiving terminal, thereby reduce bearing accuracy and increasing needed time of location.
Summary of the invention
The objective of the invention is, the satellite positioning method of judging based on satellite health information in a kind of Beidou satellite navigation system is provided.
The invention provides a kind of satellite positioning method of judging based on satellite health information, described satellite comprises GEO satellite and non-GEO satellite, and described method comprises: step 1, receive the signal of a described GEO satellite, and demodulate the health and fitness information of all satellites; Step 2 is judged the described health and fitness information that demodulates, and selects healthy satellite to position.
Further, the described GEO satellite of described step 1 itself is healthy, otherwise reselects the GEO satellite of a health.
Further, described health and fitness information comprises the signal health and fitness information of satellite clock health and fitness information and first frequency and/or second frequency and/or the 3rd frequency.
Further, described first frequency, second frequency and the 3rd frequency are respectively B1 frequency, B2 frequency and B3 frequency.
Further, described satellite positioning method is used for the Big Dipper 2 generation satellite navigation system.
The present invention also provides a kind of satellite navigation receiver of using above-mentioned satellite positioning method.
Further, the described GEO satellite of described step 1 itself is healthy, otherwise reselects the GEO satellite of a health.
Further, described health and fitness information comprises the signal health and fitness information of satellite clock health and fitness information and first frequency and/or second frequency and/or the 3rd frequency.
Further, described first frequency, second frequency and the 3rd frequency are respectively B1 frequency, B2 frequency and B3 frequency.
Further, described satellite navigation receiver is the Big Dipper 2 generation satellite navigation receiver.
After adopting technical scheme of the present invention, satellite receiving terminal can be according to the health condition of satellite, and the signal that the preferential normal satellite of selection work state sends positions, and can improve locating accuracy, shortens positioning time.
 
Description of drawings
Fig. 1 is the schematic flow sheet of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
Table 1 is in the Big Dipper 2 generation satellite navigation system, relates to the classification of satellite health supplementary and the characteristics of broadcasting in the satellite-signal, in the satellite message information that receives, has comprised 9 bit informations (Hea) of 30 satellite health.
Table 1: satellite health supplementary classification and broadcast characteristics
Figure 2011104443058100002DEST_PATH_IMAGE001
Table 2 is in the satellite-signal, comprises 9 bit informations and the corresponding definition of 30 satellite health.Satellite health information Heai(i=1 ~ 30) be 9bit, most significant digit (the 9th) is the satellite clock health and fitness information, and " 0 " expression satellite clock can be used, " 1 " expression satellite clock is unavailable, middle 6 is satellite-signal health status, and last 2 is information health status, and its definition sees the following form:
Table 2: satellite health 9 bit informations and corresponding definition
Figure DEST_PATH_IMAGE003
Accompanying drawing 1 is the schematic flow sheet of the embodiment of the invention, in this enforcement, at first receiver starts working 101, receive GEO satellite-signal 102, and judge this GEO satellite whether healthy 103, otherwise receiving another GEO satellite 104 again judges, it is the health and fitness information 105 of then reconciling out all satellites according to this GEO satellite-signal, one by one the health and fitness information of satellite is judged: satellite clock information whether normal 106, otherwise skip this satellite, judge the health and fitness information 107 of another satellite, be to continue then to judge whether the frequency signal is normal, otherwise skipping this satellite, judge the health and fitness information 107 of another satellite, is then to receive healthy satellite-signal 109 and utilize healthy satellite-signal to position 110.Need to prove that estimative frequency signal can be the signal of B1 and/or B2 and/or B3 frequency.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. satellite positioning method of judging based on satellite health information, described satellite comprises GEO satellite and non-GEO satellite, it is characterized in that described method comprises:
Step 1 receives the signal of a described GEO satellite, demodulates the health and fitness information of all satellites;
Step 2 is judged the described health and fitness information that demodulates, and selects healthy satellite to position.
2. satellite positioning method according to claim 1 is characterized in that, the described GEO satellite of described step 1 itself is healthy, otherwise reselects the GEO satellite of a health.
3. according to claim 1 and 2 described satellite positioning methods, it is characterized in that described health and fitness information comprises the signal health and fitness information of satellite clock health and fitness information and first frequency and/or second frequency and/or the 3rd frequency.
4. according to the described satellite positioning method of claim 1 to 3, it is characterized in that described first frequency, second frequency and the 3rd frequency are respectively B1 frequency, B2 frequency and B3 frequency.
5. according to the described satellite positioning method of claim 1 to 4, it is characterized in that described satellite positioning method is used for the Big Dipper 2 generation satellite navigation system.
6. use the satellite navigation receiver of method according to claim 1 for one kind.
7. satellite navigation receiver according to claim 6 is characterized in that, the described GEO satellite of described step 1 itself is healthy, otherwise reselects the GEO satellite of a health.
8. according to claim 6 and 7 described satellite navigation receivers, it is characterized in that described health and fitness information comprises the signal health and fitness information of satellite clock health and fitness information and first frequency and/or second frequency and/or the 3rd frequency.
9. according to the described satellite navigation receiver of claim 6 to 8, it is characterized in that: described first frequency, second frequency and the 3rd frequency are respectively B1 frequency, B2 frequency and B3 frequency.
10. according to the described satellite navigation receiver of claim 6 to 9, it is characterized in that: described satellite navigation receiver is the Big Dipper 2 generation satellite navigation receiver.
CN201110444305.8A 2011-12-27 2011-12-27 A kind of satellite positioning method judged based on satellite health information Active CN103185888B (en)

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CN105527629A (en) * 2014-09-29 2016-04-27 郑州威科姆科技股份有限公司 Beidou satellite navigation system performance monitoring device and monitoring method thereof
CN110231637A (en) * 2018-03-05 2019-09-13 中移物联网有限公司 A kind of choosing method of satellite, server and computer storage medium
CN111913201A (en) * 2020-07-07 2020-11-10 和芯星通科技(北京)有限公司 GNSS differential positioning method and device and computer readable storage medium

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Publication number Priority date Publication date Assignee Title
CN105527629A (en) * 2014-09-29 2016-04-27 郑州威科姆科技股份有限公司 Beidou satellite navigation system performance monitoring device and monitoring method thereof
CN110231637A (en) * 2018-03-05 2019-09-13 中移物联网有限公司 A kind of choosing method of satellite, server and computer storage medium
CN111913201A (en) * 2020-07-07 2020-11-10 和芯星通科技(北京)有限公司 GNSS differential positioning method and device and computer readable storage medium
CN111913201B (en) * 2020-07-07 2023-03-14 和芯星通科技(北京)有限公司 GNSS differential positioning method and device and computer readable storage medium

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