JPH0340583U - - Google Patents
Info
- Publication number
- JPH0340583U JPH0340583U JP10117189U JP10117189U JPH0340583U JP H0340583 U JPH0340583 U JP H0340583U JP 10117189 U JP10117189 U JP 10117189U JP 10117189 U JP10117189 U JP 10117189U JP H0340583 U JPH0340583 U JP H0340583U
- Authority
- JP
- Japan
- Prior art keywords
- data
- circuit
- frequency
- spectrum
- holding circuit
- 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
- 238000001228 spectrum Methods 0.000 claims description 7
- 238000010606 normalization Methods 0.000 claims description 2
- 230000003595 spectral effect Effects 0.000 claims description 2
- 230000008707 rearrangement Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案の実施例に係る周波数分析表示
装置の構成を示すブロツク図、第２図は実施例装
置により信号処理をした結果を示すグラフ図、第
３図は従来装置により処理した信号を示し、図ａ
は周波数分析器から出力されるスペクトルを示す
グラフ図、図ｂは図ｃのスペクトルのうち一定周
波数帯域内のスペクトルの拡大図、図ｃは正規化
したときの中間スペクトルレベル値Ｘｋを示すグ
ラフ図である。
１……周波数分析器、２……データ保持回路と
しての遅延シフトレジスタ、３……並び替え回路
、４……平均値回路、５……正規化回路としての
除算回路、７……表示器、８……制御器。
Fig. 1 is a block diagram showing the configuration of a frequency analysis display device according to an embodiment of the present invention, Fig. 2 is a graph showing the results of signal processing by the embodiment device, and Fig. 3 is a signal processed by a conventional device. Figure a
Figure b is a graph showing the spectrum output from the frequency analyzer, Figure b is an enlarged view of the spectrum within a certain frequency band from the spectrum in Figure c, and Figure c is a graph showing the intermediate spectral level value Xk when normalized. It is a diagram. 1... Frequency analyzer, 2... Delay shift register as a data holding circuit, 3... Sorting circuit, 4... Average value circuit, 5... Division circuit as normalization circuit, 7... Display, 8...Controller.
Claims (1)
ルを表示する周波数分析表示装置において、一定
の周波数帯域内のスペクトルデータを入力保持す
るデータ保持回路と、このデータ保持回路内のス
ペクトルデータをレベルの低い順に並び替えるデ
ータ並び替え回路と、このデータ並び替え回路で
並び替えたスペクトルデータの低いレベルから抽
出した所定個のデータの平均レベル値を演算する
平均値回路と、上記データ保持回路中の中間スペ
クトルデータ値を上記平均値回路の平均レベル値
により除算して正規化する正規化回路とを設けた
ことを特徴とする周波数分析表示装置。 A frequency analysis display device that analyzes the frequency of underwater acoustic signals and displays the frequency spectrum includes a data holding circuit that inputs and holds spectrum data within a certain frequency band, and a data holding circuit that arranges the spectrum data in this data holding circuit in descending order of level. an average value circuit that calculates an average level value of a predetermined number of data extracted from low levels of the spectrum data sorted by the data rearrangement circuit; and an intermediate spectral data value in the data holding circuit. A frequency analysis display device comprising: a normalization circuit that divides and normalizes by the average level value of the average value circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10117189U JPH0340583U (en) | 1989-08-31 | 1989-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10117189U JPH0340583U (en) | 1989-08-31 | 1989-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0340583U true JPH0340583U (en) | 1991-04-18 |
Family
ID=31650135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10117189U Pending JPH0340583U (en) | 1989-08-31 | 1989-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0340583U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013068553A (en) * | 2011-09-23 | 2013-04-18 | Nec Corp | Active sonar device, and signal normalizing method of active sonar device and program thereof |
-
1989
- 1989-08-31 JP JP10117189U patent/JPH0340583U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013068553A (en) * | 2011-09-23 | 2013-04-18 | Nec Corp | Active sonar device, and signal normalizing method of active sonar device and program thereof |
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