GB583036A - Improvements in and relating to detecting and range finding systems employing radio pulses - Google Patents
Improvements in and relating to detecting and range finding systems employing radio pulsesInfo
- Publication number
- GB583036A GB583036A GB1608643A GB1608643A GB583036A GB 583036 A GB583036 A GB 583036A GB 1608643 A GB1608643 A GB 1608643A GB 1608643 A GB1608643 A GB 1608643A GB 583036 A GB583036 A GB 583036A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bias
- amplifier
- circuits
- receiver
- valves
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/16—Automatic control
- H03G5/24—Automatic control in frequency-selective amplifiers
- H03G5/26—Automatic control in frequency-selective amplifiers having discharge tubes
-
- 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
-
- 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/285—Receivers
- G01S7/34—Gain of receiver varied automatically during pulse-recurrence period, e.g. anti-clutter gain control
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)
Abstract
583,036. Radiolocation. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Sept. 30, 1943, No. 16086. [Class 40 (v)] In a radiolocation system employing radio pulses projected to and reflected from distant objects, the gain of the receiver increases progressively with time, so that the weaker pulses reflected from more distant objects receive greater amplification, and at the same time, the band width decreases progressively. In the system shown, the valves of the I.F. amplifier include bias input. or discharge circuits comprising condensers 35 and resistances 36. A part of each pulse radiated by the transmitting aerial 11 is picked up directly by the receiving aerial 13 and this overloads each stage of the amplifier producing a high negative bias on the control grids. At the end of the transmitted pulse, the bias circuits begin to discharge and the receiver begins to recover sensitivity, the time constant of the circuits being chosen so that maximum sensitivity is regained towards the end of the reflection period. Decrease in the band width during the reflection period is effected by the use of unbyepassed cathode resistances 25 of different values producing symmetrical detuning of the amplifier, the valves being of the high-mutual-conductance type in which the input capacity varies with grid bias. Where the receiver is rendered inoperative during the transmitting period, the biassing potential may be obtained from another part of the circuit.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE480703D BE480703A (en) | 1943-09-30 | ||
| BE583036D BE583036A (en) | 1943-09-30 | ||
| US457064A US2435960A (en) | 1942-09-02 | 1942-09-02 | Radio detecting and range finding system |
| GB1608643A GB583036A (en) | 1943-09-30 | 1943-09-30 | Improvements in and relating to detecting and range finding systems employing radio pulses |
| FR951771D FR951771A (en) | 1943-09-30 | 1947-08-07 | radar equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1608643A GB583036A (en) | 1943-09-30 | 1943-09-30 | Improvements in and relating to detecting and range finding systems employing radio pulses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB583036A true GB583036A (en) | 1946-12-05 |
Family
ID=10070924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1608643A Expired GB583036A (en) | 1942-09-02 | 1943-09-30 | Improvements in and relating to detecting and range finding systems employing radio pulses |
Country Status (3)
| Country | Link |
|---|---|
| BE (2) | BE480703A (en) |
| FR (1) | FR951771A (en) |
| GB (1) | GB583036A (en) |
-
0
- BE BE583036D patent/BE583036A/xx unknown
- BE BE480703D patent/BE480703A/xx unknown
-
1943
- 1943-09-30 GB GB1608643A patent/GB583036A/en not_active Expired
-
1947
- 1947-08-07 FR FR951771D patent/FR951771A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE480703A (en) | |
| FR951771A (en) | 1949-11-03 |
| BE583036A (en) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2466959A (en) | Radio receiver noise discriminating circuit | |
| US2717992A (en) | Transient surge detector | |
| GB563034A (en) | Improvements in or relating to electric signal transmission systems | |
| US2225524A (en) | Directional wireless system employing pulses | |
| US2429513A (en) | Gain-control arrangement | |
| GB612371A (en) | Pulse-shaping arrangement for a pulse-modulation wave-signal receiver | |
| GB650937A (en) | Improved radio detecting apparatus | |
| US3721986A (en) | Range measuring system | |
| US2427691A (en) | Noise reducing in pulse reception | |
| US4571548A (en) | Floating limiter circuit | |
| GB592579A (en) | Radio obstacle detection systems employing reflected pulses | |
| US2591088A (en) | Video blanking circuit | |
| US2280109A (en) | Beat frequency altimeter | |
| GB583036A (en) | Improvements in and relating to detecting and range finding systems employing radio pulses | |
| US2728852A (en) | Echo ranging apparatus | |
| US2482128A (en) | Receiver protection circuit | |
| US2597870A (en) | Noise elimination system for pulse signal receivers | |
| US2818502A (en) | Transponder system | |
| US2199401A (en) | Radio decoupling system for excessive amplitudes | |
| US2736797A (en) | Radio relay with false receiver signal suppression | |
| GB685478A (en) | Improvements in or relating to thermionic valve amplifiers | |
| US2697780A (en) | Pulse receiver | |
| GB605206A (en) | Arrangement for suppressing impulsive interference in the reception of amplitude modulated signals | |
| US2375551A (en) | Impulse amplifier | |
| GB580324A (en) | Improvements in or relating to thermionic amplifier circuits |