GB1318615A – Range detection system
– Google Patents
GB1318615A – Range detection system
– Google Patents
Range detection system
Info
Publication number
GB1318615A
GB1318615A
GB3026370A
GB3026370A
GB1318615A
GB 1318615 A
GB1318615 A
GB 1318615A
GB 3026370 A
GB3026370 A
GB 3026370A
GB 3026370 A
GB3026370 A
GB 3026370A
GB 1318615 A
GB1318615 A
GB 1318615A
Authority
GB
United Kingdom
Prior art keywords
pulse
coupled
output
input
signal
Prior art date
1969-06-23
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
Application number
GB3026370A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Babcock Electronics Corp
Original Assignee
Babcock Electronics Corp
Priority date (The priority date 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 date listed.)
1969-06-23
Filing date
1970-06-22
Publication date
1973-05-31
1970-06-22
Application filed by Babcock Electronics Corp
filed
Critical
Babcock Electronics Corp
1973-05-31
Publication of GB1318615A
publication
Critical
patent/GB1318615A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
238000001514
detection method
Methods
0.000
title
abstract
2
238000002592
echocardiography
Methods
0.000
abstract
2
230000000694
effects
Effects
0.000
abstract
2
230000002238
attenuated effect
Effects
0.000
abstract
1
230000005540
biological transmission
Effects
0.000
abstract
1
230000001934
delay
Effects
0.000
abstract
1
230000003111
delayed effect
Effects
0.000
abstract
1
238000009434
installation
Methods
0.000
abstract
1
239000007787
solid
Substances
0.000
abstract
1
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
G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
G01S13/50—Systems of measurement based on relative movement of target
G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
G01S13/64—Velocity measuring systems using range gates
Abstract
1318615 Pulse radar BABCOCK ELECTRONICS CORP 22 June 1970 [23 June 1969] 30263/70 Heading H4D A range detection system comprises means for transmitting signals for a period corresponding to the time taken for said signals to traverse a selected fraction of the range of the system, and detecting means, which may make use of the Doppler effect, for detecting a signal from a target. The detecting means comprises a plurality of gating means each having as one input said detected echo signal, and as another input a signal of duration substantially equal to the period of the transmitted signal, the time of beginning of application of said other input signal to each gating means being different. A system which operates at a frequency such as 1800 MHz, and which is particularly suitable for installation in a target drone to determine the miss-distances of bullets (e.g. from 5 to 200 feet) for telemetering to a ground station, is described with reference to Fig. 2. An oscillator 34 is controlled by a master pulse generator 36 and is coupled through a first circulator 38, a switch 40, and a second circulator 32 to an aerial 30. Part of the output of the oscillator 34 is coupled to one input of a mixer 56, and another part is coupled to a series arrangement of a rectifier 45 and resistors 46, 47. Voltage developed across the resistor 46 controls the operaton of a pulse generator 42 and of a slow switch 50. Signals received on the aerial 30 are coupled through the circulator 32, the slow switch 50, and an R.F. amplifier 54 to the other input of the mixer 56. Output from the said mixer is coupled through a video amplifier 58 to the paralleled first inputs of a series of gates 64, 66, 68 (in practice, more than three gates may be provided). The second inputs of said gates are respectively connected through one, two, and three of similar delay elements, 70, 72, 74 to the output side of the pulse generator 42. The master pulse generator 36 provides a relatively long pulse to the oscillator 34, but the enabling pulse from the pulse generator 42 is comparatively short, e.g., 10 nano-seconds. This enabling pulse operates the switch 40, so that an R.F. pulse is transmitted from the aerial 30. It also successively energizes the second inputs of the gates 64, 66, 68 at, for example, 10 nanosecond intervals, as it passes through the delay elements 70, 72, 74. A received pulse from a moving target leads to a corresponding output from the mixer 56, since it has a frequency difference from the oscillator 34, owing to the Doppler effect. One of the gates 64, 66, 68 is enabled if the delays due to the delay elementsin series with its second input are equivalent to the transit delay in the go-return path of the received pulse arriving at its first input. Output from a gate is taken through a box-car detector, an audio amplifier, and a limiter to an output terminal for processing. The slow switch 50 is a device which becomes increasingly conductive with time, so that strong echoes from near-by objects are attenuated as compared with weaker echoes from more distant objects. A solid state device may be used (Fig. 4, not shown). In a second embodiment a separate detector, or radio frequency gate, is used for each increment of range, and separate aerials 116, 118, Fig. 5, are provided for transmission and reception. Some of the energy directed to the aerial 116 is coupled to a power divider 132, which supplies respective first inputs of detectors 126, 127, 128 through delay elements of progressively increasing delay times. Signals received on the aerial 118 are coupled through an R.F. amplifier 120 and a slow switch 124 to a power divider 122, which supplies respective second inputs of the detectors 126, 127, 128. Simultaneous application of an echo signal from a moving target and of the delayed transmitted pulse to a detector results in a Doppler output signal being applied through an amplifier to one of the output terminals 151, 153, 154.
GB3026370A
1969-06-23
1970-06-22
Range detection system
Expired
GB1318615A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US83570169A
1969-06-23
1969-06-23
Publications (1)
Publication Number
Publication Date
GB1318615A
true
GB1318615A
(en)
1973-05-31
Family
ID=25270246
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB3026370A
Expired
GB1318615A
(en)
1969-06-23
1970-06-22
Range detection system
Country Status (3)
Country
Link
US
(1)
US3611373A
(en)
DE
(1)
DE2030665A1
(en)
GB
(1)
GB1318615A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
RU2571884C1
(en)
*
2014-08-19
2015-12-27
Открытое акционерное общество “ОКБ-Планета” ОАО “ОКБ-Планета”
Receiving-transmitting module of active phased antenna array
Families Citing this family (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2456162C2
(en)
*
1974-11-28
1982-12-23
Diehl GmbH & Co, 8500 Nürnberg
Projectile fuse with an optoelectronic measuring device
DE2614680A1
(en)
*
1975-04-07
1976-10-21
Motorola Inc
METHOD AND APPARATUS FOR MEASURING THE VECTOR OF A MINIMUM HIT DEPOSIT
US4031534A
(en)
*
1976-06-01
1977-06-21
The United States Of America As Represented By The Secretary Of The Navy
Noise resistant zone penetration detection system
GB1570898A
(en)
*
1976-12-22
1980-07-09
Standard Telephones Cables Ltd
Ultrasonic faucet control
US4174520A
(en)
*
1978-02-13
1979-11-13
Canadian Patents & Development Limited
Radar altimeter for tropical areas
US4739329A
(en)
*
1986-04-16
1988-04-19
Motorola, Inc.
Scaler scoring system
JPH0534439A
(en)
*
1991-07-30
1993-02-09
Natl Space Dev Agency Japan
Method for measuring distance using telemeter
US5760743A
(en)
*
1996-07-25
1998-06-02
The United States Of America As Represented By The Secretary Of The Navy
Miss distance indicator data processing and recording apparatus
Family Cites Families (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2741762A
(en)
*
1946-02-05
1956-04-10
Irving H Page
Radar indicator system
DE1188447B
(en)
*
1956-05-28
1965-03-04
Ramo Wooldridge Corp
Collision warning and protection system
US3166746A
(en)
*
1960-09-23
1965-01-19
Sperry Rand Corp
Target velocity-azimuth indicator
US3480959A
(en)
*
1968-05-07
1969-11-25
United Aircraft Corp
Range gated integrator
1969
1969-06-23
US
US835701A
patent/US3611373A/en
not_active
Expired – Lifetime
1970
1970-06-22
DE
DE19702030665
patent/DE2030665A1/en
active
Pending
1970-06-22
GB
GB3026370A
patent/GB1318615A/en
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
RU2571884C1
(en)
*
2014-08-19
2015-12-27
Открытое акционерное общество “ОКБ-Планета” ОАО “ОКБ-Планета”
Receiving-transmitting module of active phased antenna array
Also Published As
Publication number
Publication date
US3611373A
(en)
1971-10-05
DE2030665A1
(en)
1971-01-21
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Legal Events
Date
Code
Title
Description
1973-10-10
PS
Patent sealed [section 19, patents act 1949]
1976-01-28
PLNP
Patent lapsed through nonpayment of renewal fees
