GB1212265A - Improvements in or relating to radar pulse length discriminator circuits - Google Patents
Improvements in or relating to radar pulse length discriminator circuitsInfo
- Publication number
- GB1212265A GB1212265A GB22983/68A GB2298368A GB1212265A GB 1212265 A GB1212265 A GB 1212265A GB 22983/68 A GB22983/68 A GB 22983/68A GB 2298368 A GB2298368 A GB 2298368A GB 1212265 A GB1212265 A GB 1212265A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- pulses
- target
- duration
- radar
- 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
- 230000001960 triggered effect Effects 0.000 abstract 2
- 230000003111 delayed effect Effects 0.000 abstract 1
- 238000001556 precipitation Methods 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
- 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
- G01S7/292—Extracting wanted echo-signals
- G01S7/2921—Extracting wanted echo-signals based on data belonging to one radar period
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
- G01R29/027—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values
- G01R29/0273—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values the pulse characteristic being duration, i.e. width (indicating that frequency of pulses is above or below a certain limit)
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
1,212,265. Radar pulse discriminators. MINISTER OF TECHNOLOGY. 6 May, 1969 [15 May, 1968], No. 22983/68. Heading H4D. In a discriminator (Fig. 1) for separating wanted radar echo pulses from unwanted longer pulses, the radar video channel excites a pulsator circuit 1 generating reciprocal differentiated pulses from the leading and trailing edges of the unwanted and wanted pulses respectively; a delay circuit being triggered on a negative pulse to generate an output pulse of target echo form and preset duration, whose trailing edges triggers a monostable to produce a delayed target pulse. A further monostable is triggered direct by a negative-going pulse of the reciprocal waveform to produce a target pulse, and the monostable outputs are applied to a coincidence gate, whose output develops a target echo pulse of width equivalent to the delay at 2; such output pulse (Fig. 2, not shown) not being produced by input pulses exceeding a target echo pulse in duration (e.g. from precipitation) but an output pulse being produced by an input pulse of target echo duration, whether or not superimposed on a signal of longer duration.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB22983/68A GB1212265A (en) | 1968-05-15 | 1968-05-15 | Improvements in or relating to radar pulse length discriminator circuits |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB22983/68A GB1212265A (en) | 1968-05-15 | 1968-05-15 | Improvements in or relating to radar pulse length discriminator circuits |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1212265A true GB1212265A (en) | 1970-11-11 |
Family
ID=10188197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22983/68A Expired GB1212265A (en) | 1968-05-15 | 1968-05-15 | Improvements in or relating to radar pulse length discriminator circuits |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1212265A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1705498A1 (en) * | 2004-01-13 | 2006-09-27 | The Nippon Signal Co., Ltd. | Reception time determining apparatus and distance measuring apparatus using the same |
-
1968
- 1968-05-15 GB GB22983/68A patent/GB1212265A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1705498A1 (en) * | 2004-01-13 | 2006-09-27 | The Nippon Signal Co., Ltd. | Reception time determining apparatus and distance measuring apparatus using the same |
EP1705498A4 (en) * | 2004-01-13 | 2007-04-04 | Nippon Signal Co Ltd | Reception time determining apparatus and distance measuring apparatus using the same |
US7443342B2 (en) | 2004-01-13 | 2008-10-28 | The Nippon Signal Co., Ltd. | Reception time determining apparatus and distance measuring apparatus using the same |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |