JP2005207932A5 - - Google Patents

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JP2005207932A5
JP2005207932A5 JP2004015893A JP2004015893A JP2005207932A5 JP 2005207932 A5 JP2005207932 A5 JP 2005207932A5 JP 2004015893 A JP2004015893 A JP 2004015893A JP 2004015893 A JP2004015893 A JP 2004015893A JP 2005207932 A5 JP2005207932 A5 JP 2005207932A5
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Japan
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spread spectrum
detected
value
target
radar apparatus
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JP2004015893A
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JP2005207932A (en
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Priority to JP2004015893A priority Critical patent/JP2005207932A/en
Priority claimed from JP2004015893A external-priority patent/JP2005207932A/en
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スペクトル拡散符号を発生する符号発生器によって生成された拡散符号により変調された信号を送信し、前記送信された信号のターゲットからの反射波を受信し、前記スペクトル拡散符号を遅延したスペクトル拡散符号を用いて受信された信号を逆拡散処理してその相関値を検出し、ターゲットの存在を検出するターゲット検出方法において、前記検出された相関値の平均値を検出し、さらに前記相関値の標準偏差を検出して、前記検出された標準偏差および前記検出された平均値に基づいてターゲット検出のための閾値を設定することを特徴とする、ターゲット検出方法。A signal modulated by a spread code generated by a code generator that generates a spread spectrum code is transmitted, a reflected wave from a target of the transmitted signal is received, and a spread spectrum code obtained by delaying the spread spectrum code In the target detection method for detecting the correlation value by detecting the correlation value by despreading the received signal, detecting an average value of the detected correlation value, and further detecting a standard deviation of the correlation value , And a threshold value for target detection is set based on the detected standard deviation and the detected average value. スペクトル拡散符号を発生する符号発生器と、前記符号発生器によって生成された拡散符号により変調された信号を送信する送信部と、前記送信された信号のターゲットからの反射波を受信する受信部と、前記スペクトル拡散符号を遅延する遅延部と、前記遅延されたスペクトル拡散符号を用いて前記受信部によって受信された信号を逆拡散処理してその相関値を検出する相関値検出部と、前記検出された相関値からターゲットの存在を検出するターゲット検出部とを備えたスペクトル拡散レーダ装置において、前記ターゲット検出部は、前記検出された相関値の平均を検出する平均値検出部と、前記相関値の標準偏差を検出する標準偏差検出部とを有する閾値設定部を備え、該閾値設定部は前記検出された標準偏差および前記検出された平均値に基づいてターゲット検出のための閾値を設定することを特徴とする、スペクトル拡散レーダ装置。   A code generator for generating a spread spectrum code, a transmitter for transmitting a signal modulated by the spread code generated by the code generator, and a receiver for receiving a reflected wave from a target of the transmitted signal; A delay unit that delays the spread spectrum code, a correlation value detection unit that detects a correlation value by despreading the signal received by the reception unit using the delayed spread spectrum code, and the detection A spread spectrum radar apparatus comprising: a target detection unit configured to detect the presence of a target from the correlation value obtained; wherein the target detection unit includes an average value detection unit that detects an average of the detected correlation values; and the correlation value And a standard deviation detector for detecting a standard deviation of the standard deviation. The threshold value setting unit includes the detected standard deviation and the detected average deviation. And sets the threshold value for target detection based on the value, the spread spectrum radar apparatus. 請求項２に記載のスペクトル拡散レーダ装置において、前記閾値設定部はさらに、前記検出された標準偏差に対して前記スペクトル拡散符号に対応してあらかじめ設定された倍数を乗算する乗算部と、前記検出された平均値に前記乗算部出力を加算する加算部とを有し、該加算結果に基づいて前記閾値を設定することを特徴とする、スペクトル拡散レーダ装置。 3. The spread spectrum radar apparatus according to claim 2 , wherein the threshold setting unit further includes a multiplication unit that multiplies the detected standard deviation by a preset multiple corresponding to the spread spectrum code, and the detection. A spread spectrum radar apparatus, comprising: an adder that adds the output of the multiplier to the averaged value; and the threshold is set based on the addition result. 請求項２または３に記載のスペクトル拡散レーダ装置において、前記ターゲット検出部は、前記閾値設定部において設定された閾値を用いてターゲット検出を行った後、前記検出されたターゲットの相関値を除いた残りの相関値について前記閾値設定部において再度閾値の設定を行い、前記再度設定された閾値を用いてターゲット検出することを特徴とする、スペクトル拡散レーダ装置。 4. The spread spectrum radar apparatus according to claim 2 , wherein the target detection unit performs target detection using a threshold set in the threshold setting unit, and then removes a correlation value of the detected target. The spread spectrum radar apparatus, wherein the remaining threshold value is set again in the threshold value setting unit, and the target is detected using the reset threshold value. 請求項４に記載のスペクトル拡散レーダ装置において、前記ターゲット検出部は、ターゲットが検出されなくなるまで、前記検出されたターゲットの相関値を除いた残りの相関値に関する再度の閾値設定を繰り返すことを特徴とする、スペクトル拡散レーダ装置。 5. The spread spectrum radar apparatus according to claim 4 , wherein the target detection unit repeats the threshold setting for the remaining correlation values excluding the correlation value of the detected target until the target is no longer detected. Spread spectrum radar apparatus. 請求項４に記載のスペクトル拡散レーダ装置において、前記ターゲット検出部は、予め設定した個数のターゲットが検出されるまで、前記検出されたターゲットの相関値を除いた残りの相関値に関する再度の閾値設定を繰り返すことを特徴とする、スペクトル拡散レーダ装置。 5. The spread spectrum radar apparatus according to claim 4 , wherein the target detection unit sets the threshold again for the remaining correlation values excluding the correlation values of the detected targets until a preset number of targets are detected. Is a spread spectrum radar apparatus.
JP2004015893A 2004-01-23 2004-01-23 Spectrum spread radar device Pending JP2005207932A (en)

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JP2005207932A JP2005207932A (en) 2005-08-04
JP2005207932A5 true JP2005207932A5 (en) 2007-02-22

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JP2005265461A (en) * 2004-03-16 2005-09-29 Fujitsu Ten Ltd Radar system
JP2009074917A (en) 2007-09-20 2009-04-09 Panasonic Corp Spread spectrum type radar system, virtual image determining method and virtual image oppressing method
US8982668B2 (en) * 2010-11-15 2015-03-17 Semiconductor Components Industries, Llc Semiconductor device and method of forming same for correlation detection
US10197664B2 (en) * 2015-07-20 2019-02-05 Brain Corporation Apparatus and methods for detection of objects using broadband signals
RU191281U1 (en) * 2018-09-13 2019-08-01 Акционерное Общество "Научно-исследовательский институт по измерительной технике - радиотехнические комплексы" Device for post-detector inter-period processing of radio pulses
RU2704789C1 (en) * 2019-01-15 2019-10-31 Владимир Валентинович Родионов Method for adaptive signal processing in survey coherent-pulse radar stations
KR102232203B1 (en) * 2019-08-12 2021-03-25 국방과학연구소 Method for determining adaptive threshold value in semi-active laser detect system and system thereof
CN116819509B (en) * 2023-08-28 2023-11-07 烟台初心航空科技有限公司 Radar positioning and ranging method based on spread spectrum time domain reflection

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JP2000078110A (en) * 1998-08-31 2000-03-14 Mitsubishi Electric Corp Rake receiver, radio receiver and path detection method in rake receiver
JP2001042032A (en) * 1999-07-27 2001-02-16 Furukawa Electric Co Ltd:The Method and device for detecting signal of radar device
JP3358603B2 (en) * 1999-11-04 2002-12-24 日本電気株式会社 Path timing detection circuit and its detection method
JP4297306B2 (en) * 1999-12-07 2009-07-15 古河電気工業株式会社 Spread spectrum modulation method and apparatus
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