JPS528236B2 - - Google Patents
Info
- Publication number
- JPS528236B2 JPS528236B2 JP48086918A JP8691873A JPS528236B2 JP S528236 B2 JPS528236 B2 JP S528236B2 JP 48086918 A JP48086918 A JP 48086918A JP 8691873 A JP8691873 A JP 8691873A JP S528236 B2 JPS528236 B2 JP S528236B2
- Authority
- JP
- Japan
- 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
- G01S1/08—Systems for determining direction or position line
- G01S1/38—Systems for determining direction or position line using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the antenna
- G01S1/40—Systems for determining direction or position line using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the antenna the apparent movement of the antenna being produced by cyclic sequential energisation of fixed antennas
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3623172A GB1402885A (en) | 1972-08-03 | 1972-08-03 | Doppler radio gui-ance systems |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS4960489A JPS4960489A (ja) | 1974-06-12 |
JPS528236B2 true JPS528236B2 (ja) | 1977-03-08 |
Family
ID=10386192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP48086918A Expired JPS528236B2 (ja) | 1972-08-03 | 1973-08-03 |
Country Status (8)
Country | Link |
---|---|
US (1) | US3893118A (ja) |
JP (1) | JPS528236B2 (ja) |
AU (1) | AU475716B2 (ja) |
DE (1) | DE2338844A1 (ja) |
FR (1) | FR2194972B3 (ja) |
GB (1) | GB1402885A (ja) |
IT (1) | IT992743B (ja) |
NL (1) | NL7310806A (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1489923A (en) * | 1974-02-12 | 1977-10-26 | Standard Telephones Cables Ltd | Frequency measuring arrangement |
GB1512780A (en) * | 1974-12-23 | 1978-06-01 | Standard Telephones Cables Ltd | Doppler scanning guidance system radio receiver |
US4301455A (en) * | 1979-10-17 | 1981-11-17 | United States Of America | Groundspeed measurement system |
US5970105A (en) * | 1998-05-11 | 1999-10-19 | Cleveland Medical Devices Inc. | Apparatus and method for efficient wireless communications in the presence of frequency error |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1225190A (ja) * | 1968-09-23 | 1971-03-17 | ||
GB1236141A (en) * | 1969-03-07 | 1971-06-23 | Standard Telephones Cables Ltd | Radio navigation system |
-
1972
- 1972-08-03 GB GB3623172A patent/GB1402885A/en not_active Expired
-
1973
- 1973-07-26 FR FR737327353A patent/FR2194972B3/fr not_active Expired
- 1973-07-26 US US382957A patent/US3893118A/en not_active Expired - Lifetime
- 1973-07-30 IT IT27256/73A patent/IT992743B/it active
- 1973-07-31 DE DE19732338844 patent/DE2338844A1/de active Pending
- 1973-08-02 AU AU58832/73A patent/AU475716B2/en not_active Expired
- 1973-08-03 NL NL7310806A patent/NL7310806A/xx unknown
- 1973-08-03 JP JP48086918A patent/JPS528236B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2194972B3 (ja) | 1976-07-09 |
NL7310806A (ja) | 1974-02-05 |
AU5883273A (en) | 1975-02-06 |
FR2194972A1 (ja) | 1974-03-01 |
GB1402885A (en) | 1975-08-13 |
AU475716B2 (en) | 1976-09-02 |
DE2338844A1 (de) | 1974-02-14 |
US3893118A (en) | 1975-07-01 |
IT992743B (it) | 1975-09-30 |
JPS4960489A (ja) | 1974-06-12 |