GB1119739A - Radio navigation system - Google Patents
Radio navigation systemInfo
- Publication number
- GB1119739A GB1119739A GB2445867A GB2445867A GB1119739A GB 1119739 A GB1119739 A GB 1119739A GB 2445867 A GB2445867 A GB 2445867A GB 2445867 A GB2445867 A GB 2445867A GB 1119739 A GB1119739 A GB 1119739A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phase
- phase difference
- linear
- radio direction
- navigation system
- 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
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
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
1,119,739. Radio direction finding. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. 25 May, 1967 [25 May, 1966], No. 24458/67. Addition to 977,991. Heading H4D. The Specification relates to an improvement of the radio direction finder disclosed in Specification 977,991, wherein, since the phase discriminator 12, Fig. 3, has a non-linear, sinusoidal phase difference versus output voltage characteristic, Fig. 2, the range of variation of the phase difference between the two input signals is compressed such that only the linear part (B 2 -A 2 ) of the characteristics is used, by means of a negative feedback loop, whereby the A.C. variations of the output of the phase discriminator 12 at the frequency of rotation of the aerials, is fed, via a low-pass filter 16 and amplifier 19, to control the phase shifts given to the channel signals by shifters 11 and 11<SP>1</SP>, in such a direction as to cause said compression. The signal applied to the phase shifter, is also applied to the synchronous detectors 13 and 14.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR62848A FR90433E (en) | 1966-05-25 | 1966-05-25 | Homing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1119739A true GB1119739A (en) | 1968-07-10 |
Family
ID=8609365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2445867A Expired GB1119739A (en) | 1966-05-25 | 1967-05-25 | Radio navigation system |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1591044A1 (en) |
| FR (1) | FR90433E (en) |
| GB (1) | GB1119739A (en) |
| NL (1) | NL6707216A (en) |
-
1966
- 1966-05-25 FR FR62848A patent/FR90433E/en not_active Expired
-
1967
- 1967-05-23 DE DE19671591044 patent/DE1591044A1/en active Pending
- 1967-05-24 NL NL6707216A patent/NL6707216A/xx unknown
- 1967-05-25 GB GB2445867A patent/GB1119739A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL6707216A (en) | 1967-11-27 |
| DE1591044A1 (en) | 1970-08-20 |
| FR90433E (en) | 1967-12-08 |
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