JPH01146178U - - Google Patents
Info
- Publication number
- JPH01146178U JPH01146178U JP4394188U JP4394188U JPH01146178U JP H01146178 U JPH01146178 U JP H01146178U JP 4394188 U JP4394188 U JP 4394188U JP 4394188 U JP4394188 U JP 4394188U JP H01146178 U JPH01146178 U JP H01146178U
- Authority
- JP
- Japan
- Prior art keywords
- logarithmic conversion
- average value
- conversion circuit
- weather clutter
- target
- 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)
Description
第１図はこの考案の一実施例によるウエザーク
ラツタ中目標自動検出装置を示す図、第２図は従
来のウエザークラツタ中目標自動検出装置を示す
図、第３図はレーダの受信電力を表す図である。
図において１は対数変換回路、２はシフト・レ
ジスタ、３は平均値演算回路、４は減算回路、５
は逆対数変換回路、６はスレツシヨルド演算回路
、７はレーダ、８は目標、９はウエザークラツタ
、１０は受信機雑音である。なお、図中、同一符
号は同一、または相当部分を示す。
Fig. 1 is a diagram showing an automatic target detection device during weather clutter according to an embodiment of this invention, Fig. 2 is a diagram showing a conventional automatic target detection device during weather clutter, and Fig. 3 is a diagram showing the radar reception power. FIG. In the figure, 1 is a logarithmic conversion circuit, 2 is a shift register, 3 is an average value calculation circuit, 4 is a subtraction circuit, and 5
6 is a threshold calculation circuit, 7 is a radar, 8 is a target, 9 is a weather clutter, and 10 is a receiver noise. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
信電力を入力信号とし、この信号を対数変換する
対数変換回路と、この対数変換回路の出力信号の
平均値演算を行う平均値演算回路と、この平均値
演算回路の出力信号の逆対数変換を行う逆対数変
換回路と、距離によりスレツシヨルドを演算し、
ウエザクラツタを目標と誤つて検出する確率を一
定とし、目標を自動検出するためのスレツシヨル
ドを設定する手段とを備えたことを特徴とするウ
エザクラツタ中目標自動検出装置。 A logarithmic conversion circuit that takes received power based on weather clutter (reflected waves from rain) as an input signal and logarithmically converts this signal, an average value calculation circuit that calculates the average value of the output signal of this logarithmic conversion circuit, and this average value. An anti-logarithmic conversion circuit performs anti-logarithmic conversion of the output signal of the arithmetic circuit, and a threshold is calculated based on the distance.
1. An automatic target detection device during weather clutter, comprising means for setting a threshold for automatically detecting a target by setting a constant probability of erroneously detecting a weather clutter as a target.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4394188U JPH01146178U (en) | 1988-03-31 | 1988-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4394188U JPH01146178U (en) | 1988-03-31 | 1988-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01146178U true JPH01146178U (en) | 1989-10-09 |
Family
ID=31270322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4394188U Pending JPH01146178U (en) | 1988-03-31 | 1988-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01146178U (en) |
-
1988
- 1988-03-31 JP JP4394188U patent/JPH01146178U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0738901A3 (en) | Doppler-effect vehicle speed sensor using different speed determining rules depending upon receiver output | |
| JPH01152277U (en) | ||
| JPH01146179U (en) | ||
| JPH01151271U (en) | ||
| JPH01151272U (en) | ||
| JPH01152278U (en) | ||
| JPH0293782U (en) | ||
| JPH06249946A (en) | Radar device | |
| JPS6425778U (en) | ||
| JPH0125342Y2 (en) | ||
| JP2972630B2 (en) | Wake detector | |
| JPS62162680U (en) | ||
| JPS55164355A (en) | Ae wave discriminating unit | |
| JPH06148312A (en) | Target detection device | |
| JPH0436482U (en) | ||
| JPS63163473U (en) | ||
| JPS6338084U (en) | ||
| QUAZI | A Method for Detecting Acoustic Signals From an Underwater Source(Patent Application) | |
| JPS62124579U (en) | ||
| JPS5816571U (en) | radar receiving device | |
| JPS6355186U (en) | ||
| Quazi | Method for Detecting Acoustic Signals from an Underwater Source | |
| JPH01137483U (en) | ||
| JPS6446777U (en) | ||
| JPS62124576U (en) |