GB1333371A - Locating method for electromagnetic radiation - Google Patents
Locating method for electromagnetic radiationInfo
- Publication number
- GB1333371A GB1333371A GB2800067A GB2800067A GB1333371A GB 1333371 A GB1333371 A GB 1333371A GB 2800067 A GB2800067 A GB 2800067A GB 2800067 A GB2800067 A GB 2800067A GB 1333371 A GB1333371 A GB 1333371A
- Authority
- GB
- United Kingdom
- Prior art keywords
- distance
- signals
- situated
- base line
- displaced
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000005670 electromagnetic radiation Effects 0.000 title 1
- 230000003287 optical effect Effects 0.000 abstract 3
- 230000005693 optoelectronics Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/16—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/78—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
- G01S3/782—Systems for determining direction or deviation from predetermined direction
- G01S3/787—Systems for determining direction or deviation from predetermined direction using rotating reticles producing a direction-dependent modulation characteristic
- G01S3/788—Systems for determining direction or deviation from predetermined direction using rotating reticles producing a direction-dependent modulation characteristic producing a frequency modulation characteristic
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Optical Distance (AREA)
Abstract
1333371 Opto-electronic ranging ELTRO GmbH & CO GES FUR STRAHLUNGSTECHNIK 16 June 1967 [30 June 1966] 28000/67 Heading H4D An arrangement for determining the distance and direction of an object in space emitting infra-red radiation comprises two spaced optical systems F1, W1, W3 and F2, W2, W4 situated at opposite ends of a base line and forming object images in planes Z1, Z2, these images being respectively modulated by modulation systems M1, M2 to produce electrical output signals S1, S 2 from detectors P1, P2. Each modulation system comprises, Fig. 2, a disc 21 with radial slots 22, the two discs being rotated by a motor M0 in the direction of arrow 24 and also being similarly rotated about an optical axis 25 as indicated by arrow 26. Due to parallax, an object situated at a finite distance from the optical systems produces an image displaced from the centre of the discs and due to the rotation and nutation of the latter this image is displaced laterally and the slots cause a frequency modulation over a corresponding frequency range, the two signals S1 and S2 being mutually displaced through 180 degrees and having the same frequency sweep. For an object situated at infinity the parallax is zero. Thus the distance of the object is a function of the frequency sweep and may be computed from the signals S1 S2. The direction of the object is determined by comparing the phase of the signals S1, S2 with a reference phase signal R derived from the motor M0. The computing is done by electronic data processing means (Fig. 4, not shown) in which three signals A, B and E are produced, of which A and B represent the values for the abscissa and ordinate of the object, related to a right-angled system of coordinates associated with the object and in a plane parallel to the base line, and E represents the distance between the base line centre point and the said plane so that the distance of the object is determined by E<SP>1</SP> = #A<SP>2</SP>+B<SP>2</SP>+E<SP>2</SP>.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEE0031963 | 1966-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1333371A true GB1333371A (en) | 1973-10-10 |
Family
ID=7075354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2800067A Expired GB1333371A (en) | 1966-06-30 | 1967-06-16 | Locating method for electromagnetic radiation |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB1333371A (en) |
| IT (1) | IT953003B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2124850A (en) * | 1982-08-04 | 1984-02-22 | Philips Electronic Associated | Rangefinder for marked targets |
| FR2561785A1 (en) * | 1984-03-22 | 1985-09-27 | Eltro Gmbh | METHOD AND DEVICE FOR DETECTION OF A THERMAL EMISSION OBJECT AND DETERMINATION OF ITS DIRECTION |
| FR2612647A1 (en) * | 1987-03-19 | 1988-09-23 | Messerschmitt Boelkow Blohm | MODULATION DEVICE FOR A RADIATION DETECTOR DEVICE CAPTURING AN IMAGE FIELD |
| GB2279762A (en) * | 1982-02-15 | 1995-01-11 | Ferranti Plc | Optical scanning system |
-
1967
- 1967-06-16 GB GB2800067A patent/GB1333371A/en not_active Expired
- 1967-06-28 IT IT5226367A patent/IT953003B/en active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2279762A (en) * | 1982-02-15 | 1995-01-11 | Ferranti Plc | Optical scanning system |
| GB2279762B (en) * | 1982-02-15 | 1995-06-28 | Ferranti Plc | Optical scanning system |
| GB2124850A (en) * | 1982-08-04 | 1984-02-22 | Philips Electronic Associated | Rangefinder for marked targets |
| FR2561785A1 (en) * | 1984-03-22 | 1985-09-27 | Eltro Gmbh | METHOD AND DEVICE FOR DETECTION OF A THERMAL EMISSION OBJECT AND DETERMINATION OF ITS DIRECTION |
| GB2156622A (en) * | 1984-03-22 | 1985-10-09 | Eltro Gmbh | Target location method and apparatus |
| FR2612647A1 (en) * | 1987-03-19 | 1988-09-23 | Messerschmitt Boelkow Blohm | MODULATION DEVICE FOR A RADIATION DETECTOR DEVICE CAPTURING AN IMAGE FIELD |
| DE3708923A1 (en) * | 1987-03-19 | 1988-09-29 | Messerschmitt Boelkow Blohm | MODULATION DEVICE |
Also Published As
| Publication number | Publication date |
|---|---|
| IT953003B (en) | 1973-08-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |