JPS629186U - - Google Patents
Info
- Publication number
- JPS629186U JPS629186U JP9988385U JP9988385U JPS629186U JP S629186 U JPS629186 U JP S629186U JP 9988385 U JP9988385 U JP 9988385U JP 9988385 U JP9988385 U JP 9988385U JP S629186 U JPS629186 U JP S629186U
- Authority
- JP
- Japan
- Prior art keywords
- output
- video
- threshold
- selection means
- video selection
- 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
- 238000001514 detection method Methods 0.000 claims description 19
- 230000001629 suppression Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
Description
第１図は本考案の実施例の構成を示すブロツク
図、第２図は第１図の実施例における各部の動作
波形図、第３図は従来のレーダー信号処理装置の
構成例を示すブロツク図、第４図は第３図の構成
例の動作説明図、第５図ａおよび第５図ｂは従来
技術の問題点の説明図である。
１０１……受信ビデオ、１０２……ビデオ選択
手段、１０３……クラツタ抑圧手段、１０４……
自動クラツタ検出手段、１０５……クラツタ抑圧
処理ビデオ、１０６……選択ビデオ、１０７……
スレツシユホールドコード更新手段、１０８……
メモリ、１０９……目標検出レベル発生手段、１
１０……目標検出手段、１１１……目標信号、３
０１……空中線、３０２，３０３……空中線ビー
ム、３０４……目標、３０４′……目標信号、３
０５……空中線ビーム３０２での受信ビデオ波形
、３０６……空中線ビーム３０３での受信ビデオ
波形、３０７……空中線、３０８……空中線ビー
ム、３０９……目標、３０９′……目標信号、３
１０……ジヤマー機、３１１……空中線ビーム３
０８での受信ビデオ波形、３１２……空中線ビー
ム３１３での受信ビデオ波形、３１３……空中線
ビーム、４０１……ＭＴＩ―ＣＦＡＲビデオ、４
０２……ノーマルビデオ、４０３……ビデオ選択
器、４０４……自動クラツタ検出器、４０５……
スレツシユホールド、４０６……比較器、４０７
……シフトレジスタ、４０８……計数器、４０９
……スレツシユホールド、４１０……比較器、４
１１……選択ビデオ、４１２……メモリ、４１３
……振幅弁別スレツシユホールドコード更新回路
、４１４……振幅弁別用スレツシユホールド発生
回路、４１５……スレツシユホールドコード更新
回路、４１６……スレツシユホールドコード（更
新前）、４１７……比較器、４１８……スレツシ
ユホールドコード（更新後）、４１９……検出レ
ベル発生器、４２０……メモリ、４２１……振幅
弁別スレツシユホールドコード更新回路、４２２
……検出レベル発生器、４２３……メモリ、４２
４……振幅弁別スレツシユホールドコード更新回
路、４２５……検出レベル発生器、４２６……目
標検出器、４２７……目標検出信号、４２８……
ビデオ選択信号、４３０……最大振幅検出回路、
５０１……ノーマルビデオ、５０２……ＭＴＩ―
ＣＦＡＲビデオ、５０３……ビデオ選択信号（自
動クラツタ領域検出信号）、５０４……選択ビデ
オ、５０５……最大振幅検出回路出力、５０６…
…最大振幅値と振幅弁別用スレツシユホールド、
５０７……比較器出力、５０８……選択ビデオと
目標検出レベル、５０９……ノーマルビデオ、５
１０……ＭＴＩ―ＣＦＡＲビデオ、５１１……ビ
デオ撰択信号（自動クラツタ領域検出信号）、５
１２……選択ビデオ、５１３……最大振幅検出回
路出力、５１４……最大振幅値と振幅弁別用スレ
ツシユホールド、５１５……比較器出力、５１６
……選択ビデオと目標検出レベル、５１７……目
標信号、５１８……小領域の距離範囲に相当する
間隔、５１９，５２０……振幅弁別用スレツシユ
ホールド、５２１，５２２……目標検出用スレツ
シユホールドレベル、５２３……最大振幅値、５
２４……クラツタ消え残り。
FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, FIG. 2 is an operational waveform diagram of each part in the embodiment of FIG. 1, and FIG. 3 is a block diagram showing an example of the configuration of a conventional radar signal processing device. , FIG. 4 is an explanatory diagram of the operation of the configuration example of FIG. 3, and FIGS. 5a and 5b are explanatory diagrams of problems in the prior art. 101...Received video, 102...Video selection means, 103...Clutter suppression means, 104...
Automatic clutter detection means, 105...Clutter suppression processing video, 106...Selected video, 107...
Threshold code update means, 108...
Memory, 109...Target detection level generating means, 1
10...Target detection means, 111...Target signal, 3
01...Antenna, 302, 303...Aerial beam, 304...Target, 304'...Target signal, 3
05...Received video waveform at the antenna beam 302, 306...Received video waveform at the antenna beam 303, 307...Antenna, 308...Aerial beam, 309...Target, 309'...Target signal, 3
10... Jamar plane, 311... Aerial beam 3
Received video waveform at 08, 312... Received video waveform at antenna beam 313, 313... Aerial beam, 401... MTI-CFAR video, 4
02...Normal video, 403...Video selector, 404...Automatic clutter detector, 405...
Threshold, 406... Comparator, 407
...Shift register, 408 ...Counter, 409
...Threshold hold, 410...Comparator, 4
11...Selected video, 412...Memory, 413
...Amplitude discrimination threshold code update circuit, 414...Amplitude discrimination threshold generation circuit, 415...Threshold code update circuit, 416...Threshold code (before update), 417...Comparator , 418... Threshold code (after update), 419... Detection level generator, 420... Memory, 421... Amplitude discrimination threshold hold code update circuit, 422
...Detection level generator, 423...Memory, 42
4...Amplitude discrimination threshold code update circuit, 425...Detection level generator, 426...Target detector, 427...Target detection signal, 428...
Video selection signal, 430...maximum amplitude detection circuit,
501...Normal video, 502...MTI-
CFAR video, 503... Video selection signal (automatic clutter area detection signal), 504... Selected video, 505... Maximum amplitude detection circuit output, 506...
...maximum amplitude value and threshold for amplitude discrimination,
507...Comparator output, 508...Selected video and target detection level, 509...Normal video, 5
10...MTI-CFAR video, 511...Video selection signal (automatic clutter area detection signal), 5
12...Selected video, 513...Maximum amplitude detection circuit output, 514...Maximum amplitude value and threshold for amplitude discrimination, 515...Comparator output, 516
... Selected video and target detection level, 517 ... Target signal, 518 ... Interval corresponding to the distance range of the small area, 519, 520 ... Threshold for amplitude discrimination, 521, 522 ... Threshold for target detection Hold level, 523...Maximum amplitude value, 5
24... Kuratsuta remains.
Claims (1)
中線ペンシルビームを走査して目標を探知するレ
ーダー装置のレーダー信号から、クラツタの存在
しない領域に対してはノーマルビデオを選択して
出力し、クラツタの存在する領域に対してはクラ
ツタ抑圧処理の施されたビデオを選択して出力す
るビデオ選択手段と；あらかじめ定めた距離範囲
、方位範囲および仰角範囲を単位領域とし、全捜
索領域にわたり前記の一単位領域毎のビデオ選択
手段出力振幅が、あらかじめビデオのダイナミツ
クレンジ内で設定したＮ段階（Ｎは整数）のレベ
ルの何れに相当しているかを示す値であるスレツ
シユホールドコードを記憶するメモリと；前記仰
角範囲に相当する前記ビデオ選択手段出力と前記
仰角範囲に相当する前記メモリ出力とを入力とし
、ビデオ選択手段出力の振幅値と、メモリに記憶
されたスレツシユホールドコードとから、前記仰
角範囲に対し、前記の距離範囲、方位範囲ごとに
新たなスレツシユホールドコードを独立に決定し
、再び前記メモリに出力する複数個の振幅弁別ス
レツシユホールドコード更新手段と；前記振幅弁
別スレツシユホールドコード更新手段の出力であ
るスレツシユホールドコードを入力とし、該スレ
ツシユホールドコードを目標検出のためのしきい
値に交換する複数個の目標検出レベル発生手段と
；前記ビデオ選択手段出力および前記目標検出レ
ベル発生手段出力であるしきい値を入力とし、ビ
デオ選択手段出力が前記しきい値を越えた時に目
標として検出する目標検出手段と；を有すること
を特徴とするレーダー信号処理装置。 From the radar signal of a radar device that detects targets by scanning a sharp aerial pencil beam in the azimuth and elevation directions of the search space, normal video is selected and output for areas where clutter does not exist, and the presence of clutter is detected. a video selection means for selecting and outputting a video subjected to clutter suppression processing for an area to be searched; a memory for storing a threshold code, which is a value indicating which of N levels (N is an integer) preset within the video dynamic range, the output amplitude of each video selection means corresponds to; The video selection means output corresponding to the elevation angle range and the memory output corresponding to the elevation angle range are input, and the elevation angle range is determined from the amplitude value of the video selection means output and the threshold code stored in the memory. a plurality of amplitude discrimination threshold code updating means for independently determining a new threshold code for each of the distance range and azimuth range and outputting the same to the memory again; the amplitude discrimination threshold code; a plurality of target detection level generating means that receives a threshold code output from the updating means and exchanges the threshold code with a threshold value for target detection; an output of the video selection means and the target detection means; A radar signal processing device comprising: target detection means that receives a threshold value as an output of the level generation means as an input, and detects the target as a target when the output of the video selection means exceeds the threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9988385U JPS629186U (en) | 1985-06-29 | 1985-06-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9988385U JPS629186U (en) | 1985-06-29 | 1985-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS629186U true JPS629186U (en) | 1987-01-20 |
Family
ID=30969176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9988385U Pending JPS629186U (en) | 1985-06-29 | 1985-06-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS629186U (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5721675A (en) * | 1980-07-15 | 1982-02-04 | Matsushita Electric Works Ltd | Electric lock controller |
| JPS57101774A (en) * | 1980-10-29 | 1982-06-24 | Hollandse Signaalapparaten Bv | Data selection and plot signal generator |
| JPS5810669A (en) * | 1981-07-02 | 1983-01-21 | ホランドセ・シグナ−ルアパラ−テン・ビ−・ベ− | Searching radar device |
| JPS58129375A (en) * | 1982-01-29 | 1983-08-02 | Nec Corp | Clutter suppression apparatus |
-
1985
- 1985-06-29 JP JP9988385U patent/JPS629186U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5721675A (en) * | 1980-07-15 | 1982-02-04 | Matsushita Electric Works Ltd | Electric lock controller |
| JPS57101774A (en) * | 1980-10-29 | 1982-06-24 | Hollandse Signaalapparaten Bv | Data selection and plot signal generator |
| JPS5810669A (en) * | 1981-07-02 | 1983-01-21 | ホランドセ・シグナ−ルアパラ−テン・ビ−・ベ− | Searching radar device |
| JPS58129375A (en) * | 1982-01-29 | 1983-08-02 | Nec Corp | Clutter suppression apparatus |
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