GB809885A - Radio compass employing loop sensing device - Google Patents
Radio compass employing loop sensing deviceInfo
- Publication number
- GB809885A GB809885A GB3666/57A GB366657A GB809885A GB 809885 A GB809885 A GB 809885A GB 3666/57 A GB3666/57 A GB 3666/57A GB 366657 A GB366657 A GB 366657A GB 809885 A GB809885 A GB 809885A
- Authority
- GB
- United Kingdom
- Prior art keywords
- output
- terminal
- positive
- circuit
- radio
- 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)
- Circuits Of Receivers In General (AREA)
Abstract
809,885. Phase-sensitive circuits. BENDIX AVIATION CORPORATION. Feb. 1, 1957 [Feb. 17, 1956], No. 3666/57. Class 38 (4). [Also in Group XL (c)] A radio compass (see Group XL (c)) includes a radio-frequency or an audio-frequency phasesensitive circuit to provide a D.C. output signal which is positive or negative depending on whether waveform, Fig. 9 (d), or Fig. 9 (e), respectively (or their detected equivalents) is present at the input. Radio-frequency circuit (see Figs. 6 and 9). A ten c/s voltage (see Fig. 9 (b)) is applied at terminal 53 and the receiver, i.f. output at terminal 40; on the positive-going half-cycles of the 10 c/s voltage the positive-going excursions of the receiver output are detected and vice versa, the circuit output being averaged over the long time-constant of resistor 44 and capacitor 55. Audio-frequency circuit (see Figs. 7 and 9).- The receiver second detector output is applied at terminal 60 and the ten c/s. voltage at terminal 64; when the input is the envelope of waveform, (Fig. 9 (d), the average output at the grid of valve 77 over the long time-constant of resistor 44 and capacitor 55 is negative and when that of Fig. 9(e) positive. Valve 77 inverts this output to give the same sense at terminal 46 as in the previous circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US809885XA | 1956-02-17 | 1956-02-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB809885A true GB809885A (en) | 1959-03-04 |
Family
ID=22160951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3666/57A Expired GB809885A (en) | 1956-02-17 | 1957-02-01 | Radio compass employing loop sensing device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB809885A (en) |
-
1957
- 1957-02-01 GB GB3666/57A patent/GB809885A/en not_active Expired
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