ES409378A1 - Mejoras en los sistemas de navegacion. - Google Patents
Mejoras en los sistemas de navegacion.Info
- Publication number
- ES409378A1 ES409378A1 ES409378A ES409378A ES409378A1 ES 409378 A1 ES409378 A1 ES 409378A1 ES 409378 A ES409378 A ES 409378A ES 409378 A ES409378 A ES 409378A ES 409378 A1 ES409378 A1 ES 409378A1
- Authority
- ES
- Spain
- Prior art keywords
- frequency
- signal
- navigation system
- transmitted
- phase difference
- 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
- 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)
- Position Fixing By Use Of Radio Waves (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Mejoras en los sistemas de navegación constituidas por un sistema de navegación Doppler omnidireccional en el cual, en el terminal transmisor, se transmite una oscilación modulada en amplitud en una frecuencia f0 como primera señal y se transmite al menos una oscilación de frecuencia f0+f1 ó f0-f1, respectivamente, como segunda señal, por medio de antenas individuales de un sistema circular, las cuales están conectadas cíclicamente en secuencia y en el cual, en el terminal receptor, se evalúa la diferencia de fase entre las dos señales demoduladas, caracterizado porque, en el terminal transmisor, las antenas simples están conectadas adicionalmente en serie cíclica en el sentido opuesto a su sentido y , dentro del orden de las mismas, se transmite como tercera señal una frecuencia más, por lo menos, con un valor f0+f2 ó f0-f2 respectivamente, y en que, en el terminal receptor, de la diferencia de gases entre las señales demoduladas segunda y tercera se deriva la indicación del acimut, usándose la diferencia de fase entre las señales demodulas primera y segunda para determinar la no ambigüedad.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712160731 DE2160731C3 (de) | 1971-12-07 | Doppler-Drehfunkfeuersystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES409378A1 true ES409378A1 (es) | 1975-12-01 |
Family
ID=5827300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES409378A Expired ES409378A1 (es) | 1971-12-07 | 1972-12-06 | Mejoras en los sistemas de navegacion. |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU464312B2 (es) |
| CH (1) | CH552813A (es) |
| ES (1) | ES409378A1 (es) |
| GB (1) | GB1402285A (es) |
-
1972
- 1972-12-04 AU AU49590/72A patent/AU464312B2/en not_active Expired
- 1972-12-05 CH CH1769072A patent/CH552813A/xx not_active IP Right Cessation
- 1972-12-06 ES ES409378A patent/ES409378A1/es not_active Expired
- 1972-12-06 GB GB5630372A patent/GB1402285A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1402285A (en) | 1975-08-06 |
| DE2160731B2 (de) | 1975-07-31 |
| AU464312B2 (en) | 1975-08-21 |
| DE2160731A1 (de) | 1973-06-14 |
| CH552813A (de) | 1974-08-15 |
| AU4959072A (en) | 1974-06-06 |
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