GB750567A - Improvements relating to radar receiving equipment - Google Patents
Improvements relating to radar receiving equipmentInfo
- Publication number
- GB750567A GB750567A GB16474/54A GB1647454A GB750567A GB 750567 A GB750567 A GB 750567A GB 16474/54 A GB16474/54 A GB 16474/54A GB 1647454 A GB1647454 A GB 1647454A GB 750567 A GB750567 A GB 750567A
- Authority
- GB
- United Kingdom
- Prior art keywords
- detector
- output
- selector
- fed
- pulse
- 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
- 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
- G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
- G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
- G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
-
- 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
- G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
-
- 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
- G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
- G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
- G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
- G01S13/534—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi based upon amplitude or phase shift resulting from movement of objects, with reference to the surrounding clutter echo signal, e.g. non coherent MTi, clutter referenced MTi, externally coherent MTi
-
- 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
- G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods
- G01S7/2926—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods by integration
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
750,567. Radar. METROPOLITANVICKERS ELECTRICAL CO., Ltd. June 3, 1954 [June 5, 1953], No. 16474/54. Class 40 (7). A pulse radar receiver includes a coherent phase pulse detector to suppress responses from fixed objects and a simple detector combined with means for increasing the sensitivity. The output of the first of these is selected at short ranges and of the second at longer ranges. The range at which the changeover occurs may be adjustable. The signals received may be fed through a preamplifier 2 to both the coherent phase pulse detector 3 and the simple pulse detector 4. Selecting means 6 select the output of detector 3 for short ranges and feed it directly to subtraction circuit 8 and also through delay device 7 which introduces a delay equal to, or a multiple of, the pulse repetition time. The output of circuit 8 which will consist only of signals corresponding to moving objects is fed to the output 10 through a selector 9 operated in synchronism with selector 6. At longer ranges selector 6 derives signals from adding device 5 fed from detector 4 and feeds them through delay device 7 and selector 9 to output 10 and also from delay device 7 back to adding device 5 to increase the sensitivity. Compensation may be made for the delays introduced and also for any inequality of gain.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR750567X | 1953-06-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB750567A true GB750567A (en) | 1956-06-20 |
Family
ID=9151629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16474/54A Expired GB750567A (en) | 1953-06-05 | 1954-06-03 | Improvements relating to radar receiving equipment |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB750567A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1298586B (en) * | 1966-06-07 | 1969-07-03 | Telefunken Patent | Arrangement for the display suppression of fixed targets in an impulse radar device |
-
1954
- 1954-06-03 GB GB16474/54A patent/GB750567A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1298586B (en) * | 1966-06-07 | 1969-07-03 | Telefunken Patent | Arrangement for the display suppression of fixed targets in an impulse radar device |
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