JPS641989A - Radar signal processor - Google Patents
Radar signal processorInfo
- Publication number
- JPS641989A JPS641989A JP62156980A JP15698087A JPS641989A JP S641989 A JPS641989 A JP S641989A JP 62156980 A JP62156980 A JP 62156980A JP 15698087 A JP15698087 A JP 15698087A JP S641989 A JPS641989 A JP S641989A
- Authority
- JP
- Japan
- Prior art keywords
- threshold value
- radar
- area
- signal
- clutter
- 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.)
- Pending
Links
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
PURPOSE: To enable the execution of a threshold value control corresponding to the environmental conditions of a radar signal with a small storage capacity, by dividing the unit of a small area into two kinds in an apparatus wherein a threshold value is controlled for each unit of the small area and a target is detected under the control.
CONSTITUTION: Based on the amplitude value of an input radar signal 5 and a radar target signal 7, a threshold value determination circuit 1 determines and sets the threshold value for a subsequent radar rotation period for each unit of a small area. As to a unit size in a range and bearing of this small area, either one of two kinds of sizes is set on the basis of a clutter index 8 determined by a clutter area determination circuit 2, so that it is small inside a clutter area and large outside the area. A clutter index 9 which is another output of the determination circuit 2 is combined with the threshold value, an output of the threshold value determination circuit 1, and stored into a threshold value storage circuit 3. The threshold value 6 in the storage circuit 3 is read out in the subsequent radar rotation period. An amplitude comparator circuit 4 compares this threshold value 6 held at a certain level with the amplitude data of the radar signal 5, and when the signal 5 is larger than the threshold value 6, it outputs the radar target signal 7 corresponding to the given position.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-156980A JPH011989A (en) | 1987-06-23 | Radar signal processing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-156980A JPH011989A (en) | 1987-06-23 | Radar signal processing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS641989A true JPS641989A (en) | 1989-01-06 |
JPH011989A JPH011989A (en) | 1989-01-06 |
Family
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0392783A (en) * | 1989-09-05 | 1991-04-17 | Nec Corp | Radar signal processor |
JP2009075093A (en) * | 2007-08-31 | 2009-04-09 | Furuno Electric Co Ltd | Radar device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0392783A (en) * | 1989-09-05 | 1991-04-17 | Nec Corp | Radar signal processor |
JP2009075093A (en) * | 2007-08-31 | 2009-04-09 | Furuno Electric Co Ltd | Radar device |
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