JPH0248883U - - Google Patents
Info
- Publication number
- JPH0248883U JPH0248883U JP12721688U JP12721688U JPH0248883U JP H0248883 U JPH0248883 U JP H0248883U JP 12721688 U JP12721688 U JP 12721688U JP 12721688 U JP12721688 U JP 12721688U JP H0248883 U JPH0248883 U JP H0248883U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- level signal
- circuit
- signal
- time
- 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
- 238000000605 extraction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案実施例における周波数分析表示
装置のブロツク図、第２図は同じく制御信号のタ
イミングチヤート、第３図は同じくドツプラ効果
による受信信号の周波数変化を示した図である。
１：クロツクパルス発生器、２：ゲート回路、
３：周波数分析器、４：高レベル信号抽出回路、
５：周波数発生器、６：時刻発生器、７：記憶回
路、８：計算回路、９：表示器、１０１：目標受
信信号、１０２：スペクトル値、１０３：検出信
号、１０４：周波数、１０５：分析時刻、２０１
：メイン制御信号、２０２：スペクトル読み出し
制御信号。
FIG. 1 is a block diagram of a frequency analysis display device according to an embodiment of the present invention, FIG. 2 is a timing chart of a control signal, and FIG. 3 is a diagram showing a frequency change of a received signal due to the Doppler effect. 1: Clock pulse generator, 2: Gate circuit,
3: Frequency analyzer, 4: High level signal extraction circuit,
5: Frequency generator, 6: Time generator, 7: Memory circuit, 8: Calculation circuit, 9: Display, 101: Target received signal, 102: Spectral value, 103: Detection signal, 104: Frequency, 105: Analysis Time, 201
: Main control signal, 202: Spectrum readout control signal.
Claims (1)
数分析器と、この周波数分析器により分析された
信号のうち高レベル信号を抽出する高レベル信号
抽出回路と、この高レベル信号抽出回路からの抽
出信号に対応して周波数を発生する周波数発生器
と、この周波数発生器からの信号と時刻を記憶す
る記憶回路と、この記憶回路に記憶された上記信
号のドツプラ効果による周波数変化がもつとも大
きいときの中心周波数とその時刻を計算する計算
回路と、この計算回路からの中心周波数と時刻の
信号を入力して表示する表示器とを具備したこと
を特徴とする周波数分析表示装置。 A frequency analyzer that analyzes the frequency of a received signal from an underwater target, a high-level signal extraction circuit that extracts a high-level signal from the signal analyzed by this frequency analyzer, and a high-level signal extraction circuit that extracts a high-level signal from the high-level signal extraction circuit. A frequency generator that generates a corresponding frequency, a memory circuit that stores the signal and time from this frequency generator, and a center frequency when the frequency change due to the Doppler effect of the signal stored in this memory circuit is the largest. 1. A frequency analysis display device comprising: a calculation circuit that calculates the time and the center frequency; and a display that inputs and displays center frequency and time signals from the calculation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12721688U JPH0248883U (en) | 1988-09-30 | 1988-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12721688U JPH0248883U (en) | 1988-09-30 | 1988-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0248883U true JPH0248883U (en) | 1990-04-04 |
Family
ID=31379447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12721688U Pending JPH0248883U (en) | 1988-09-30 | 1988-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0248883U (en) |
-
1988
- 1988-09-30 JP JP12721688U patent/JPH0248883U/ja active Pending
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