JPH01102785U - - Google Patents
Info
- Publication number
- JPH01102785U JPH01102785U JP19801287U JP19801287U JPH01102785U JP H01102785 U JPH01102785 U JP H01102785U JP 19801287 U JP19801287 U JP 19801287U JP 19801287 U JP19801287 U JP 19801287U JP H01102785 U JPH01102785 U JP H01102785U
- Authority
- JP
- Japan
- Prior art keywords
- target
- cardioid
- signal processing
- processing circuit
- maximum sensitivity
- 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
- 230000035945 sensitivity Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案の一実施例を示すブロツク図、
第２図は従来のパツシブ信号処理回路のブロツク
図、第３図ａはカーデイオイドパターン、第３図
ｂはカーデイオイドパターンの最大利得方向を目
標に指向させた状態を示す説明図である。
１……ＥＯＭＮＩハイドロホン出力、２……Ｅ
ＮＳハイドロホン出力、３……ＥＷＥハイドロホ
ン出力、４ａ，４ｂ……乗算器、５……コサイン
変換器、６ａ，６ｂ……加算器、７……振幅補正
器、８……周波数トラツク回路、９……方位計算
回路、１０……ｃｏｓβＴ、１１……ｃｏｓ（β
Ｔ―π／２）、１２……カーデイオイド出力、１
３……追尾目標の発生信号（Ｔ）、１４……
ＴのＷＥ成分、１５……ＴのＮＳ成分、１６…
…追尾目標の方位データ（βＴ）、１７……βＴ
値変換回路、１８……βＴ設定器、１９……周波
数分析回路。
FIG. 1 is a block diagram showing an embodiment of the present invention.
Fig. 2 is a block diagram of a conventional passive signal processing circuit, Fig. 3a is a cardioid pattern, and Fig. 3b is an explanatory diagram showing a state in which the maximum gain direction of the cardioid pattern is directed to the target. . 1...EOMNI hydrophone output, 2...E
NS hydrophone output, 3...EWE hydrophone output, 4a, 4b...multiplier, 5...cosine converter, 6a, 6b...adder, 7...amplitude corrector, 8...frequency track circuit, 9...Direction calculation circuit, 10...cosβT, 11...cos(β
T-π/2), 12...cardioid output, 1
3...Tracking target generation signal (T), 14...
WE component of T, 15...NS component of T, 16...
... Tracking target azimuth data (βT), 17...βT
Value conversion circuit, 18... βT setter, 19... Frequency analysis circuit.
Claims (1)
する受信指向性パターンの最大感度方向を海中の
目標に指向せしめつつ前記目標のパツシブ探知処
理を行なうパツシブ信号処理回路において、前記
目標の発生する音響を周波数分析を介して得られ
る前記目標の方向データに対応して前記カーデイ
オイド特性を自動的に回転し前記カーデイオイド
特性の最大感度方向を常時前記目標に指向せしめ
る手段を備えて成ることを特徴とするパツシブ信
号処理回路。 In a passive signal processing circuit that performs passive detection processing of an underwater target while directing the direction of maximum sensitivity of a receiving directivity pattern having cardioid characteristics to the target, the sound generated by the target is obtained through frequency analysis. A passive signal processing circuit comprising: means for automatically rotating the cardioid characteristic in response to direction data of the target, so that the maximum sensitivity direction of the cardioid characteristic is always directed toward the target.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19801287U JPH01102785U (en) | 1987-12-25 | 1987-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19801287U JPH01102785U (en) | 1987-12-25 | 1987-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01102785U true JPH01102785U (en) | 1989-07-11 |
Family
ID=31488538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19801287U Pending JPH01102785U (en) | 1987-12-25 | 1987-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01102785U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012173155A (en) * | 2011-02-22 | 2012-09-10 | Nec Corp | Sonar device and synthesis method for directionality thereof |
-
1987
- 1987-12-25 JP JP19801287U patent/JPH01102785U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012173155A (en) * | 2011-02-22 | 2012-09-10 | Nec Corp | Sonar device and synthesis method for directionality thereof |
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