JPH05249230A - Target discriminating device - Google Patents
Target discriminating deviceInfo
- Publication number
- JPH05249230A JPH05249230A JP8624692A JP8624692A JPH05249230A JP H05249230 A JPH05249230 A JP H05249230A JP 8624692 A JP8624692 A JP 8624692A JP 8624692 A JP8624692 A JP 8624692A JP H05249230 A JPH05249230 A JP H05249230A
- Authority
- JP
- Japan
- Prior art keywords
- target
- frequency
- signal
- fundamental
- fluctuation
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 241001480010 Cestrum Species 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、レーダ装置で探知した
目標の種別等の識別に利用できる、目標識別装置に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a target discriminating device which can be used for discriminating a type of a target detected by a radar device.
【０００２】[0002]
【従来の技術】レーダ装置に係る、従来の目標識別装置
としては、図２に示すような簡易な装置があった。図２
において、１はレーダ装置、１２は目標信号の周波数成
分を求める周波数成分分析器、１３は１２で求めた周波
数成分を表示する表示器であり、１４は目標信号を音響
として表示するスピーカである。2. Description of the Related Art As a conventional target identifying device related to a radar device, there is a simple device as shown in FIG. Figure 2
In the figure, 1 is a radar device, 12 is a frequency component analyzer for obtaining the frequency component of the target signal, 13 is a display for displaying the frequency component obtained by 12, and 14 is a speaker for displaying the target signal as sound.
【０００３】この装置の動作について説明すれば、レー
ダ装置１で抽出した目標信号の周波数成分を周波数成分
分析器１２で分析して、分析結果を表示器１３で表示す
るほか、必要に応じてレーダ装置１で抽出された目標信
号を音響としてスピーカ１４で表示している。Explaining the operation of this device, the frequency component of the target signal extracted by the radar device 1 is analyzed by the frequency component analyzer 12, and the analysis result is displayed on the display device 13. The target signal extracted by the device 1 is displayed as sound on the speaker 14.
【０００４】[0004]
【発明が解決しようとする課題】以上に述べた従来の装
置は、単に目標信号の周波数成分若しくは音響に変換し
た目標信号を表示するものである。このため、表示され
た目標信号の周波数成分等から、人間が過去の経験に基
づいて目標の種別等を識別する必要があった。ところ
が、表示された周波数成分等と目標の種別等との関連は
必ずしも明確ではないために、目標の識別に従事する人
間の訓練に長時間を要すだけでなく、識別結果にも客観
性を欠くという問題があった。The conventional device described above merely displays the frequency component of the target signal or the target signal converted into sound. For this reason, it has been necessary for a human to identify the target type and the like based on the past experience from the displayed frequency components of the target signal. However, the relationship between the displayed frequency components, etc. and the type of target is not always clear, so not only does it take a long time to train a person engaged in target identification, but also the objectivity in the identification result. There was a problem of lacking.
【０００５】本発明は、前述の問題点を解決するために
なされたもので、レーダ装置で得られた目標信号を分析
して目標の種別等と関連性のある特性値を得ることを目
的とする。The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to analyze a target signal obtained by a radar device to obtain a characteristic value related to the type of the target. To do.
【０００６】[0006]
【課題を解決するための手段】本発明に係る目標識別装
置は、レーダ装置で得られる目標信号から目標の種別等
と関連性のある特性値を得るために、目標信号の周波数
成分若しくは信号レベルの時間変動を求める手段と、求
めた時間変動の基本変動周波数を求める手段とを持ち、
得られた基本変動周波数を目標の種別等を特性値として
表示する構成としている。A target identifying apparatus according to the present invention is provided with a frequency component or a signal level of a target signal in order to obtain a characteristic value associated with a target type or the like from a target signal obtained by a radar apparatus. And a means for obtaining the basic variation frequency of the obtained time variation,
The obtained basic fluctuating frequency is displayed as a characteristic value such as the target type.
【０００７】[0007]
【作用】例えば、レーダ装置で探知した目標が船舶や車
両等であれば、目標信号の周波数成分（ドップラ周波数
成分）と信号レベルは目標固有のローリングやピッチン
グ等の動揺周期にも関係して周期的に変動する。また、
目標がヘリコプタであれば、それらは目標固有のロータ
の回転速度等に応じて周期的に変動する。このように、
一般的に目標信号の周波数成分や信号レベルの基本的な
変動周期は目標の機械的な特性にも依存することから、
目標信号の周波数や信号レベルの時間変動を求めて、そ
の基本変動周波数を求めれば目標の種別等と関連性のあ
る特性値を得ることができる。For example, if the target detected by the radar device is a ship or a vehicle, the frequency component (Doppler frequency component) and the signal level of the target signal are related to the oscillation period such as rolling and pitching peculiar to the target. Fluctuate. Also,
If the target is a helicopter, they fluctuate periodically according to the rotation speed of the rotor peculiar to the target. in this way,
Generally, the basic fluctuation period of the frequency component and signal level of the target signal also depends on the mechanical characteristics of the target,
By obtaining the time variation of the frequency and the signal level of the target signal and obtaining the basic variation frequency, it is possible to obtain the characteristic value related to the type of the target.
【０００８】[0008]
【実施例】以下、本発明に係る目標識別装置の一実施例
を図面に従って説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a target identifying device according to the present invention will be described below with reference to the drawings.
【０００９】図１はレーダ装置に付加した本発明の一実
施例に係る目標識別装置の要部構成を示すブロック図で
ある。図１において、１はレーダ装置、２は信号切替
器、３は目標信号の周波数成分の時間変動を信号レベル
の大小の時間変動に変換するディスクリミネータ、４は
目標信号の信号レベルの時間変動を求める検波器、５は
３若しくは４で求めた信号の基本変動周波数を求める基
本周波数分析器、６は表示器である。FIG. 1 is a block diagram showing a main configuration of a target identifying apparatus according to an embodiment of the present invention added to a radar apparatus. In FIG. 1, 1 is a radar device, 2 is a signal switcher, 3 is a discriminator for converting the time fluctuation of the frequency component of the target signal into time fluctuation of the signal level, and 4 is the time fluctuation of the signal level of the target signal. Is a fundamental frequency analyzer for obtaining the fundamental fluctuation frequency of the signal obtained in 3 or 4, and 6 is an indicator.
【００１０】次に、この装置の動作について説明する。
目標追尾中のレーダ装置１で抽出した目標信号は信号切
替器２を通じてディスクリミネータ３に供給される。デ
ィスクリミネータ３は供給された目標信号の周波数成分
の時間変動を信号レベルの大小に変換して出力信号を基
本周波数分析器５に供給する。基本周波数分析器５は供
給された信号の基本変動周波数を求めて表示器６に供給
する。表示器６は供給された基本変動周波数を表示す
る。また、必要に応じてスイッチ２の切り替えにより、
目標信号を検波器４で検波して信号レベルの時間変動を
求め、次いで基本周波数分析器５で基本変動周波数を求
めて、表示器６で表示する。Next, the operation of this device will be described.
The target signal extracted by the radar device 1 during target tracking is supplied to the discriminator 3 through the signal switch 2. The discriminator 3 converts the time variation of the frequency component of the supplied target signal into the magnitude of the signal level and supplies the output signal to the fundamental frequency analyzer 5. The fundamental frequency analyzer 5 determines the fundamental fluctuation frequency of the supplied signal and supplies it to the display 6. The display 6 displays the supplied fundamental fluctuation frequency. Also, by switching the switch 2 as necessary,
The target signal is detected by the wave detector 4 to obtain the time variation of the signal level, the fundamental frequency analyzer 5 then obtains the fundamental variation frequency, and the display 6 displays it.
【００１１】本実施例では、目標信号の周波数成分の時
間変動に関する基本変動周波数を求めているが、これは
目標信号の周波数成分に大きな影響を及ぼす目標の速度
変化に伴うドップラ周波数の基本変動周期を求めること
に対応する。また、目標信号の信号レベルの時間変動に
関する基本変動周波数を求めているが、これは目標信号
の信号レベルに大きな影響を及ぼす目標の向き等の変化
の基本変動周期を求めることに対応する。In this embodiment, the basic fluctuation frequency relating to the time fluctuation of the frequency component of the target signal is obtained. This is the basic fluctuation cycle of the Doppler frequency accompanying the speed change of the target, which greatly affects the frequency component of the target signal. Corresponding to seeking. Further, the basic fluctuation frequency relating to the time fluctuation of the signal level of the target signal is calculated, which corresponds to the basic fluctuation cycle of the change of the target direction or the like which has a great influence on the signal level of the target signal.
【００１２】したがって、これらの目標の速度や向き等
の時間変化を与える基本変動周期は目標固有の機械的な
特性にも依存することから、本発明に係る目標識別装置
の表示する基本変動周波数は目標の種別等を表す特性値
となり目標の識別に有効である。Therefore, since the basic fluctuation cycle that gives time changes such as the speed and direction of the target also depends on the mechanical characteristics peculiar to the target, the basic fluctuation frequency displayed by the target identifying device according to the present invention is It becomes a characteristic value that represents the type of the target, etc., and is effective in identifying the target.
【００１３】以上、レーダ装置で得られた目標信号か
ら、目標の速度や向き等の時間変化に関する基本変動周
波数を求める手段と、取得した基本変動周波数の表示に
ついて説明した。しかし、求めた基本変動周波数は単に
表示するだけでなく、各種目標について過去に取得した
基本変動周波数と比較して目標の種別等を自動的に判別
するために利用することも可能である。なお、基本周波
数分析器の一例として、ケブストラム法によるものがあ
るが、本発明は前記の手法に限るものではない。また、
図１の実施例ではレーダ装置１で抽出した目標信号を信
号切替器２でディスクリミネータ３を通ずる場合と検波
器４を通ずる場合を示しているが、両者を別々に作動さ
せることに限るものではなく、両者の出力信号を同時に
複数の基本周波数分析器で分析して分析結果相互の相関
を取ることも可能である。The means for obtaining the basic variation frequency with respect to the temporal change in the target speed and direction from the target signal obtained by the radar device and the display of the obtained basic variation frequency have been described above. However, the obtained basic fluctuation frequency can be used not only for displaying it but also for automatically determining the target type by comparing it with the basic fluctuation frequency acquired in the past for various targets. An example of the fundamental frequency analyzer is the cestrum method, but the present invention is not limited to the above method. Also,
The embodiment of FIG. 1 shows a case where the target signal extracted by the radar device 1 is passed through the discriminator 3 and the wave detector 4 by the signal switching device 2, but it is limited to operating both separately. Instead, it is also possible to simultaneously analyze the output signals of both with a plurality of fundamental frequency analyzers and obtain the correlation between the analysis results.
【００１４】[0014]
【発明の効果】本発明の目標識別装置によれば、レーダ
で得られた目標信号から目標の種別等に関連する特性値
を得ることができ、目標識別の確度を向上させることが
できる。また、目標の識別に従事する人間の訓練を容易
にすることができる。According to the target identifying apparatus of the present invention, it is possible to obtain the characteristic value related to the type of the target from the target signal obtained by the radar and improve the accuracy of the target identification. It can also facilitate the training of humans engaged in target identification.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明に係る目標識別装置の一実施例の要部構
成を示すブロック図である。FIG. 1 is a block diagram showing a main configuration of an embodiment of a target identifying device according to the present invention.
【図２】従来の目標識別装置の要部構成を示すブロック
図である。FIG. 2 is a block diagram showing a main configuration of a conventional target identifying device.
１ レーダ装置 ２ 信号切替器 ３ ディスクリミネータ ４ 検波器 ５ 基本周波数分析器 ６ 表示器 １２ 周波数成分分析器 １３ 表示器 １４ スピーカ 1 radar device 2 signal switcher 3 discriminator 4 detector 5 basic frequency analyzer 6 indicator 12 frequency component analyzer 13 indicator 14 speaker
Claims (1)
成分若しくは信号レベルの時間変動を求める手段と、求
めた時間変動の基本変動周波数を求める手段とを持ち、
得られた基本変動周波数を目標の種別等を表す特性値と
して表示することを特徴とする目標識別装置。1. A means for obtaining a time variation of a frequency component or a signal level of a target signal obtained by a radar device, and a means for obtaining a basic variation frequency of the obtained time variation,
A target identifying device characterized in that the obtained basic fluctuation frequency is displayed as a characteristic value representing a target type or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4086246A JP2611172B2 (en) | 1992-03-10 | 1992-03-10 | Target identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4086246A JP2611172B2 (en) | 1992-03-10 | 1992-03-10 | Target identification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05249230A true JPH05249230A (en) | 1993-09-28 |
| JP2611172B2 JP2611172B2 (en) | 1997-05-21 |
Family
ID=13881461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4086246A Expired - Lifetime JP2611172B2 (en) | 1992-03-10 | 1992-03-10 | Target identification device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2611172B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0743443A (en) * | 1993-07-29 | 1995-02-14 | Nec Corp | Receiver |
| US6999024B2 (en) | 2002-12-10 | 2006-02-14 | Denso Corporation | Method and apparatus for discriminating a target objective, and related program |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0293782U (en) * | 1989-01-10 | 1990-07-25 |
-
1992
- 1992-03-10 JP JP4086246A patent/JP2611172B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0293782U (en) * | 1989-01-10 | 1990-07-25 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0743443A (en) * | 1993-07-29 | 1995-02-14 | Nec Corp | Receiver |
| US6999024B2 (en) | 2002-12-10 | 2006-02-14 | Denso Corporation | Method and apparatus for discriminating a target objective, and related program |
| JP2007248480A (en) * | 2002-12-10 | 2007-09-27 | Denso Corp | Target discriminating device and program |
| JP4665948B2 (en) * | 2002-12-10 | 2011-04-06 | 株式会社デンソー | Object labeling device, program |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2611172B2 (en) | 1997-05-21 |
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