JP2010203965A - Radar apparatus, receiver, and correlation component detector - Google Patents

Radar apparatus, receiver, and correlation component detector Download PDF

Info

Publication number
JP2010203965A
JP2010203965A JP2009050973A JP2009050973A JP2010203965A JP 2010203965 A JP2010203965 A JP 2010203965A JP 2009050973 A JP2009050973 A JP 2009050973A JP 2009050973 A JP2009050973 A JP 2009050973A JP 2010203965 A JP2010203965 A JP 2010203965A
Authority
JP
Japan
Prior art keywords
signal
unit
modulation
systems
digital
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.)
Abandoned
Application number
JP2009050973A
Other languages
Japanese (ja)
Inventor
Keiichi Shoji
慶一 東海林
Junichiro Suzuki
潤一郎 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP2009050973A priority Critical patent/JP2010203965A/en
Publication of JP2010203965A publication Critical patent/JP2010203965A/en
Abandoned legal-status Critical Current

Links

Images

Landscapes

  • Radar Systems Or Details Thereof (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radar apparatus and a correlation component detector for maintaining performance for detecting a target even if a correlation component is generated in a reflection signal. <P>SOLUTION: An analysis section 273-1 and a weight coefficient calculating section 274-1 of a correlation component detecting section 27-1 calculate weight coefficients for maximizing a SN-ratio of a signal outputted from an adaptive demodulation section 272-1. A signal from a receive data accumulating section 271-1 is multiplied by the calculated coefficient. A pulse compression of the signal is implemented by the adaptive demodulation section 272-1. A pulse compression of the correlation component in a signal component of M-systems of wireless signals in the reflection signal is implemented by the adaptive demodulation section 272-1. A target T can be detected by a CFAR 275-1. Even if a correlation is generated in the signal component of M-systems of the wireless signals in the reflection signal, the target T can be detected from the correlation component. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、MIMO(Multiple-Input Multiple-Output)方式を用いたレーダ装置と、このレーダ装置に用いられる受信機及び相関成分検出装置に関する。   The present invention relates to a radar apparatus using a multiple-input multiple-output (MIMO) system, a receiver used in the radar apparatus, and a correlation component detection apparatus.

近年、互いに無相関となるように変調された無線信号をM(Mは2以上の自然数)個の送信機から空間へ向けて送信し、送信されたM系統の無線信号が空間中の物体により反射された反射信号をN本の受信アンテナで受信する、MIMO方式を用いたレーダ装置が提案されている(例えば、非特許文献1及び2参照)。この種のレーダ装置では、受信アンテナ毎に、M系統の無線信号の変調方式のそれぞれに対応した復調部が設置される。各復調部は、受信した反射信号において対応した変調方式の信号成分を復調する。そして、レーダ装置は、復調した信号から目標物を検出し、これらの検出結果を統合して目標物を探知するようにしている。このような構造により、MIMO方式を利用したレーダ装置は、レーダシステムの性能向上を実現することが可能である。   In recent years, wireless signals modulated so as to be uncorrelated with each other are transmitted from M transmitters (M is a natural number of 2 or more) to a space, and the transmitted M-system wireless signals are transmitted by objects in the space. There has been proposed a radar apparatus using the MIMO system that receives reflected signals reflected by N receiving antennas (see, for example, Non-Patent Documents 1 and 2). In this type of radar apparatus, a demodulator corresponding to each of the M radio signal modulation methods is installed for each receiving antenna. Each demodulator demodulates the signal component of the corresponding modulation method in the received reflected signal. The radar apparatus detects the target from the demodulated signal and integrates the detection results to detect the target. With such a structure, a radar apparatus using the MIMO method can realize improvement in the performance of the radar system.

しかしながら、従来のレーダ装置では、目標物が高速で移動する等の場合、反射信号に含まれる各無線信号の無相関性が崩れ、無線信号同士が互いに相関してしまうおそれがある。このような場合、反射信号における無線信号の相関成分は、受信アンテナ毎に設置された各復調部では復調されず、目標物の探知性能が劣化するという問題がある。   However, in the conventional radar apparatus, when the target moves at high speed, the uncorrelation between the radio signals included in the reflected signal is lost, and the radio signals may be correlated with each other. In such a case, the correlation component of the radio signal in the reflected signal is not demodulated by each demodulator installed for each receiving antenna, and there is a problem that the detection performance of the target is deteriorated.

E. Fisher, A. H. Heimovich, "Spatial diversity in radar - models and detection Performance," IEEE Trans. On Signal Processing, vol. 54, no. 3, pp. 823-838E. Fisher, A. H. Heimovich, "Spatial diversity in radar-models and detection Performance," IEEE Trans. On Signal Processing, vol. 54, no. 3, pp. 823-838 E. Fisher, A. H. Heimovich, "Performance of MIMO Radar System: Advantages of Angular Diversity," IEEE Trans. On Signal Processing, 2004E. Fisher, A. H. Heimovich, "Performance of MIMO Radar System: Advantages of Angular Diversity," IEEE Trans. On Signal Processing, 2004

以上のように、従来のMIMO方式を利用したレーダ装置では、反射信号に無線信号間の相関成分が発生した場合、目標物の探知性能が劣化するという問題があった。   As described above, the radar apparatus using the conventional MIMO method has a problem that the detection performance of the target is deteriorated when the correlation component between the radio signals is generated in the reflected signal.

この発明は上記事情によりなされたもので、その目的は、反射信号に相関成分が発生した場合であっても、目標物の探知性能を維持することが可能なレーダ装置及び受信機と、このレーダ装置及び受信機に用いられる相関成分検出装置とを提供することにある。   The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a radar device and a receiver capable of maintaining the detection performance of a target even when a correlation component is generated in a reflected signal, and the radar. An object of the present invention is to provide a correlation component detection apparatus used in an apparatus and a receiver.

上記目的を達成するため、本発明に係るレーダ装置は、互いに無相関となるように変調された無線信号を空間へ向けて送信するM(Mは2以上の自然数)個の送信機と、前記空間へ向けて送信されたM系統の無線信号が空間中の目標物により反射された反射信号を受信する受信機とを具備するレーダ装置において、前記受信機は、前記反射信号を互いに独立して受信するN(Nは2以上の自然数)系統の受信アンテナと、前記受信系統毎に設置され、前記受信アンテナで受信された反射信号を中間周波数帯の信号に変換する周波数変換部と、前記受信系統毎に設置され、前記中間周波数帯の信号をデジタル信号に変換するアナログ−デジタル変換部と、前記受信系統毎に設置され、前記デジタル信号をM系統に分配する分配部と、前記分配されたM系統毎に設置され、それぞれが前記M系統の無線信号のいずれかの変調方式に対応し、前記分配されたデジタル信号に含まれるM系統の無線信号の信号成分のうち対応した変調方式の信号成分のみを復調する復調部と、前記分配されたM系統毎に設置され、前記復調部で復調された信号から前記目標物を検出する検出部と、前記受信系統毎に設置され、前記アナログ−デジタル変換部から前記デジタル信号を受け取り、当該デジタル信号に含まれるM系統の無線信号の信号成分が互いに相関する相関成分を復調し、当該復調した信号から前記目標物を検出する相関成分検出手段と、前記受信系統毎のM系統の検出部による検出結果と、前記受信系統毎の前記相関成分検出手段による検出結果とを統合する統合部とを備えることを特徴とする。   In order to achieve the above object, a radar apparatus according to the present invention includes M (M is a natural number of 2 or more) transmitters that transmit radio signals modulated so as to be uncorrelated to each other to the space, and A radar apparatus comprising: a receiver that receives a reflected signal of an M-system radio signal transmitted toward a space and reflected by a target in the space; and the receiver transmits the reflected signal independently of each other. Receiving N (N is a natural number of 2 or more) receiving antennas, a frequency conversion unit that is installed for each receiving system and converts a reflected signal received by the receiving antenna into an intermediate frequency band signal, and the receiving An analog-to-digital converter that is installed for each system and converts the signal in the intermediate frequency band into a digital signal; a distribution unit that is installed for each reception system and distributes the digital signal to the M system; and Installed for each M system, each corresponding to one of the modulation systems of the M system radio signal, and corresponding modulation system among the signal components of the M system radio signal included in the distributed digital signal. A demodulator that demodulates only the signal component, a detector that is installed for each of the distributed M systems, detects the target from the signal demodulated by the demodulator, and is installed for each of the receiver systems; Correlation component detection means for receiving the digital signal from the digital conversion unit, demodulating a correlation component in which signal components of M-system radio signals included in the digital signal correlate with each other, and detecting the target from the demodulated signal And an integration unit that integrates a detection result of the M system detection unit for each reception system and a detection result of the correlation component detection unit for each reception system. That.

また、本発明に係る受信機は、M(Mは2以上の自然数)個の送信機から互いに無相関となるように変調されて送信されたM系統の無線信号が空間中の目標物により反射された反射信号を互いに独立して受信するN(Nは2以上の自然数)系統の受信アンテナと、前記受信系統毎に設置され、前記受信アンテナで受信された反射信号を中間周波数帯の信号に変換する周波数変換部と、前記受信系統毎に設置され、前記中間周波数帯の信号をデジタル信号に変換するアナログ−デジタル変換部と、前記受信系統毎に設置され、前記デジタル信号をM系統に分配する分配部と、前記分配されたM系統毎に設置され、それぞれが前記M系統の無線信号のいずれかの変調方式に対応し、前記分配されたデジタル信号に含まれるM系統の無線信号の信号成分のうち対応した変調方式の信号成分のみを復調する復調部と、前記分配されたM系統毎に設置され、前記復調部で復調された信号から前記目標物を検出する検出部と、前記受信系統毎に設置され、前記アナログ−デジタル変換部から前記デジタル信号を受け取り、当該デジタル信号に含まれるM系統の無線信号の信号成分が互いに相関する相関成分を復調し、当該復調した信号から前記目標物を検出する相関成分検出手段と、前記受信系統毎のM系統の検出部による検出結果と、前記受信系統毎の前記相関成分検出手段による検出結果とを統合する統合部とを具備する。   Further, the receiver according to the present invention reflects M-system radio signals transmitted from M (M is a natural number of 2 or more) transmitters so as to be uncorrelated with each other and reflected by a target in space. N (N is a natural number greater than or equal to 2) receiving antennas that receive the reflected signals independently of each other, and the reflected signals that are installed in each receiving system and received by the receiving antennas are used as intermediate frequency band signals. A frequency conversion unit for conversion, an analog-to-digital conversion unit for converting the intermediate frequency band signal into a digital signal, installed for each reception system, and for each reception system, and distributing the digital signal to M systems And a distribution unit for each of the distributed M systems, each corresponding to one of the modulation systems of the M wireless signals, and the signals of the M wireless signals included in the distributed digital signal A demodulator that demodulates only the signal component of the corresponding modulation method, a detector that is installed for each of the distributed M systems and detects the target from the signal demodulated by the demodulator, and the reception Installed for each system, receives the digital signal from the analog-to-digital converter, demodulates a correlation component in which signal components of M-system radio signals included in the digital signal correlate with each other, and generates the target from the demodulated signal A correlation component detection means for detecting an object; and an integration section for integrating a detection result by the M-system detection unit for each reception system and a detection result by the correlation component detection means for each reception system.

上記構成によるレーダ装置及び受信機では、相関成分検出手段により、アナログ−デジタル変換部からのデジタル信号において前記M系統の無線信号の信号成分が互いに相関する相関成分を復調し、その復調信号から空間中の目標物を検出するようにしている。これにより、反射信号における相関成分も復調され、この復調信号においても目標物が検出されるため、目標物の探知性能が劣化することを抑えることが可能となる。   In the radar apparatus and receiver configured as described above, the correlation component detecting means demodulates the correlation component in which the signal components of the M radio signals are correlated with each other in the digital signal from the analog-to-digital conversion unit, The target inside is detected. As a result, the correlation component in the reflected signal is also demodulated, and the target is detected in this demodulated signal, so that it is possible to prevent the detection performance of the target from deteriorating.

また、本発明に係る相関成分検出装置は、M(Mは2以上の自然数)個の送信機から互いに無相関となるように変調されて送信されたM系統の無線信号が空間中の目標物により反射された反射信号を受け取り、当該信号のデータを蓄積するデータ蓄積部と、前記データ蓄積部に蓄積された蓄積データ及び前記M個の送信機から通知された前記M系統の無線信号の変調方式に関する変調情報に基づいて、フィードバック信号のSN(Signal to Noise)比が最大となるように、前記反射信号に掛け合わせるウェイトを算出するウェイト算出部と、前記M系統の無線信号のいずれかの変調方式に対応し、前記反射信号に対して前記ウェイトを掛け合わせ後、当該信号に含まれるM系統の無線信号の信号成分のうち対応した変調方式の信号成分のみを復調して出力すると共に、前記復調した信号を前記フィードバック信号として前記ウェイト算出部へ出力する適応復調部と、前記適応復調部からの信号から前記目標物を検出する検出部とを具備する。   In addition, the correlation component detection apparatus according to the present invention is a target in space in which M radio signals modulated and transmitted from M (M is a natural number of 2 or more) transmitters so as to be uncorrelated with each other. A data accumulator that receives the reflected signal reflected by the signal, accumulates the data of the signal, the accumulated data accumulated in the data accumulator, and the modulation of the M radio signals notified from the M transmitters A weight calculating unit that calculates a weight to be multiplied by the reflected signal so that an SN (Signal to Noise) ratio of the feedback signal is maximized based on modulation information related to the method, and any one of the M radio signals Corresponding to the modulation method, after multiplying the reflected signal by the weight, only the signal component of the corresponding modulation method is demodulated among the signal components of the M system radio signals included in the signal. Outputs Te comprises an adaptive demodulator for outputting the demodulated signal to the weight calculation unit as the feedback signal, and a detector for detecting said target from the signal from the adaptive demodulator.

上記構成による相関成分検出装置では、適応復調部からのフィードバック信号のSN比が最大となるように、反射信号に掛け合わせるウェイトを算出する。そして、適応復調部で、算出したウェイトを掛け合わせた反射信号に対して復調処理をすることにより、反射信号におけるM系統の無線信号の相関成分を復調する。これにより、相関成分検出装置は、反射信号における相関成分の復調信号から目標物を検出することが可能となる。   In the correlation component detection apparatus having the above configuration, the weight to be multiplied with the reflected signal is calculated so that the SN ratio of the feedback signal from the adaptive demodulator is maximized. Then, the adaptive demodulation unit demodulates the reflected signal multiplied by the calculated weight, thereby demodulating the correlation components of the M radio signals in the reflected signal. Thereby, the correlation component detection device can detect the target from the demodulated signal of the correlation component in the reflected signal.

この発明によれば、反射信号に相関成分が発生した場合であっても、目標物の探知性能を維持することが可能なレーダ装置及び受信機と、このレーダ装置及び受信機に用いられる相関成分検出装置を提供することができる。   According to the present invention, even when a correlation component is generated in the reflected signal, the radar device and the receiver capable of maintaining the detection performance of the target, and the correlation component used in the radar device and the receiver. A detection device can be provided.

本発明の一実施形態に係るレーダ装置の機能構成を示すブロック図である。It is a block diagram which shows the function structure of the radar apparatus which concerns on one Embodiment of this invention. 図1の送信機の機能構成を示すブロック図である。It is a block diagram which shows the function structure of the transmitter of FIG. 図1の受信機の機能構成を示すブロック図である。It is a block diagram which shows the function structure of the receiver of FIG.

以下、図面を参照しながら本発明に係るレーダ装置の実施の形態について詳細に説明する。   Hereinafter, embodiments of a radar apparatus according to the present invention will be described in detail with reference to the drawings.

図1は、本発明の一実施形態に係るレーダ装置1の構成を示す概略図である。図1におけるレーダ装置1は、M(Mは2以上の自然数)個の送信機10−1〜10−M及び受信機20を具備する。送信機10−1〜10−Mは、互いに無相関となるように変調された無線信号を送信アンテナ11−1〜11−Mから空間へ向けて送信する。送信されたM系統の無線信号は、目標物Tで反射される。受信機20は、目標物で反射された反射信号をN(Nは2以上の自然数)本の受信アンテナ21−1〜21−Nで互いに独立して受信する。   FIG. 1 is a schematic diagram showing a configuration of a radar apparatus 1 according to an embodiment of the present invention. The radar apparatus 1 in FIG. 1 includes M (M is a natural number of 2 or more) transmitters 10-1 to 10-M and a receiver 20. The transmitters 10-1 to 10-M transmit radio signals modulated so as to be uncorrelated with each other from the transmission antennas 11-1 to 11-M toward the space. The transmitted M-system radio signals are reflected by the target T. The receiver 20 receives the reflected signals reflected by the target by N (N is a natural number of 2 or more) receiving antennas 21-1 to 21-N independently of each other.

図2は、本発明の一実施形態に係るレーダ装置1における送信機10−1〜10−Mの機能構成を示すブロック図である。送信機10−1〜10−Mは、信号生成部12−1〜12−M、位相変調部13−1〜13−M、周波数変換部14−1〜14−M及び送信アンテナ11−1〜11−Mをそれぞれ備える。信号生成部12−1〜12−Mは、送信パルスに直線状の周波数変調を加え、変調パルス信号を生成する。生成された変調パルス信号は、位相変調部13−1〜13−Mで位相変調され、周波数変換部14−1〜14−Mで無線周波数帯に周波数変換された後、送信アンテナ11−1〜11−Mから送信される。   FIG. 2 is a block diagram showing a functional configuration of the transmitters 10-1 to 10-M in the radar apparatus 1 according to the embodiment of the present invention. The transmitters 10-1 to 10-M include signal generation units 12-1 to 12-M, phase modulation units 13-1 to 13-M, frequency conversion units 14-1 to 14-M, and transmission antennas 11-1 to 11-1. 11-M. The signal generators 12-1 to 12-M apply linear frequency modulation to the transmission pulse to generate a modulated pulse signal. The generated modulated pulse signals are phase-modulated by the phase modulators 13-1 to 13-M, frequency-converted to the radio frequency band by the frequency converters 14-1 to 14-M, and then transmitted to the transmission antennas 11-1 to 11-1. 11-M.

このとき、位相変調部13−1〜13−Mは、送信アンテナ11−1〜11−Mから送信される無線信号が互いに無相関となるように位相変調を行う。このとき、位相変調部13−1〜13−Mでは、受け取った無線信号に対してどれだけの位相差を生じさせるかが予め設定されている。例えば、変調部13−1と変調部13−Mとの間の位相差は、送信アンテナ11−1から送信される無線信号1の位相が送信アンテナ11−Mから送信される無線信号Mの位相よりも90度だけ進んだ状態となるように設定される。また、送信機10−1〜10−Mは、位相変調部13−1〜13−Mでの位相変調の位相情報を受信機20へ通知する。   At this time, the phase modulation units 13-1 to 13-M perform phase modulation so that the radio signals transmitted from the transmission antennas 11-1 to 11-M are uncorrelated with each other. At this time, in the phase modulation units 13-1 to 13-M, how much phase difference is generated with respect to the received radio signal is preset. For example, the phase difference between the modulation unit 13-1 and the modulation unit 13-M is such that the phase of the radio signal 1 transmitted from the transmission antenna 11-1 is the phase of the radio signal M transmitted from the transmission antenna 11-M. It is set to be in a state advanced by 90 degrees. Further, the transmitters 10-1 to 10-M notify the receiver 20 of phase information of the phase modulation in the phase modulation units 13-1 to 13-M.

図3は、本発明の一実施形態に係るレーダ装置1の受信機20の機能構成を示すブロック図である。図3における受信機20は、受信アンテナ21−1〜21−Nを備え、受信アンテナ毎に独立して反射信号の受信処理が行われる。なお、受信アンテナ21−1乃至受信アンテナ21−Nで受信された反射信号の受信処理は、それぞれ同様であるため、以下では受信アンテナ21−1における処理について説明する。   FIG. 3 is a block diagram showing a functional configuration of the receiver 20 of the radar apparatus 1 according to the embodiment of the present invention. The receiver 20 in FIG. 3 includes receiving antennas 21-1 to 21-N, and receives a reflected signal independently for each receiving antenna. In addition, since the reception process of the reflected signal received with the receiving antenna 21-1 thru | or the receiving antenna 21-N is respectively the same, the process in the receiving antenna 21-1 is demonstrated below.

受信アンテナ21−1で受信された反射信号は、周波数変換部22−1で中間周波数帯の信号に変換され、アナログ−デジタル変換部23−1でデジタル信号に変換される。デジタル信号は、分配部24−1でM系統に分配され、復調部25−11〜25−1Mへそれぞれ供給される。   The reflected signal received by the receiving antenna 21-1 is converted into a signal in the intermediate frequency band by the frequency converter 22-1 and converted to a digital signal by the analog-digital converter 23-1. The digital signal is distributed to M systems by the distribution unit 24-1 and supplied to the demodulation units 25-11 to 25-1M.

復調部25−11〜25−1Mそれぞれは、送信機10−1〜10−Mにおける位相変調部13−1〜13−Mのうちいずれかの位相変調で与えられる位相差に対応している。復調部25−11〜25−1Mは、アナログ−デジタル変換部23−1からのデジタル信号におけるM系統の無線信号の信号成分のうち、対応する位相差の信号成分をパルス圧縮する。例えば、復調部25−11が位相変調部13−1で与えられた位相差に対応している場合、反射信号のうち無線信号1の信号成分のみをパルス圧縮することになる。また、復調部25−1Mが位相変調部13−Mで与えられた位相差に対応している場合、反射信号のうち無線信号Mの信号成分のみをパルス圧縮することになる。   Each of the demodulation units 25-11 to 25-1M corresponds to a phase difference given by any one of the phase modulation units 13-1 to 13-M in the transmitters 10-1 to 10-M. The demodulating units 25-11 to 25-1M pulse-compress corresponding signal components of the phase difference among the signal components of the M systems of radio signals in the digital signal from the analog-digital converting unit 23-1. For example, when the demodulator 25-11 corresponds to the phase difference given by the phase modulator 13-1, only the signal component of the radio signal 1 in the reflected signal is pulse-compressed. When the demodulator 25-1M corresponds to the phase difference given by the phase modulator 13-M, only the signal component of the radio signal M in the reflected signal is pulse-compressed.

復調部25−11〜25−1Mでパルス圧縮された信号は、CFAR(Constant False Alarm Rate)26−11〜26−1Mへ出力される。CFAR26−11〜26−1Mは、復調部25−11〜25−1Mでパルス圧縮された信号を検波(振幅情報のみの信号に変換)し、注目レンジビンの周辺パルスの信号振幅からリファレンス振幅を算出し、リファレンス振幅に対する注目レンジビン振幅の比を表す信号として、振幅比信号を出力する。これにより、CFAR26−11〜26−1Mは、目標物Tの検出を行う。   The signals pulse-compressed by the demodulation units 25-11 to 25-1M are output to CFAR (Constant False Alarm Rate) 26-11 to 26-1M. The CFARs 26-11 to 26-1M detect the signals compressed by the demodulation units 25-11 to 25-1M (convert them into signals having only amplitude information), and calculate the reference amplitude from the signal amplitudes of the peripheral pulses of the target range bin. Then, an amplitude ratio signal is output as a signal representing the ratio of the target range bin amplitude to the reference amplitude. Accordingly, the CFARs 26-11 to 26-1M detect the target T.

相関成分検出部27−1は、反射信号におけるM系統の無線信号の信号成分が互いに相関する場合、その相関成分から目標物Tを検出するものである。反射信号における無線信号の信号成分同士の相関は、目標物Tが高速に移動等することにより、無線信号に位相ずれ及び周波数遷移が発生し、M系統の無線信号における無相関性が低下することにより発生する。この相関成分は、復調部25−11〜25−1Mそれぞれに設定された位相差と対応しないため、復調部25−11〜25−1Mでパルス圧縮されることはない。なお、相関成分検出部は、受信アンテナ21−1乃至受信アンテナ21−Nの受信系全てに設置されていてもよいし、受信アンテナ21−1乃至受信アンテナ21−Nの受信系のうちいずれかの受信系に設置されていてもよい。   The correlation component detector 27-1 detects the target T from the correlation components when the signal components of the M-system radio signals in the reflected signal are correlated with each other. The correlation between the signal components of the radio signal in the reflected signal is that the target T moves at a high speed, so that a phase shift and a frequency transition occur in the radio signal, and the uncorrelation in the M system radio signals decreases. Caused by. Since this correlation component does not correspond to the phase difference set in each of the demodulation units 25-11 to 25-1M, it is not pulse-compressed by the demodulation units 25-11 to 25-1M. The correlation component detection unit may be installed in all the reception systems of the reception antennas 21-1 to 21-N, or any one of the reception systems of the reception antennas 21-1 to 21-N. It may be installed in the receiving system.

相関成分検出部27−1は、受信データ蓄積部271−1、適応復調部272−1、解析部273−1及びウェイト係数算出部274−1を備える。受信データ蓄積部271−1は、アナログ−デジタル変換部23−1からのデジタル信号を適応復調部272−1へ出力すると共に、受け取ったデジタル信号を蓄積し、その蓄積データを解析部273−1へ供給する。   The correlation component detection unit 27-1 includes a reception data storage unit 271-1, an adaptive demodulation unit 272-1, an analysis unit 273-1, and a weight coefficient calculation unit 274-1. The reception data accumulation unit 271-1 outputs the digital signal from the analog-digital conversion unit 23-1 to the adaptive demodulation unit 272-1, accumulates the received digital signal, and analyzes the accumulated data as an analysis unit 273-1. To supply.

解析部273−1は、受信データ蓄積部271−1からの蓄積データと、送信機10−1〜10−Mから通知される変調部13−1〜13−Mにおける位相情報と、適応復調部272−1からのフィードバック信号とを受け取る。解析部273−1は、受け取った蓄積データ及び位相情報に基づいて、フィードバック信号におけるS/N(Signal to Noise)比を最大にし、かつ、位相ずれ及び周波数遷移を適応的に補正するように適応復調部272−1における最良の復調方式を決定する。   The analysis unit 273-1 includes accumulated data from the reception data accumulation unit 271-1, phase information in the modulation units 13-1 to 13-M notified from the transmitters 10-1 to 10-M, and an adaptive demodulation unit. And a feedback signal from 272-1. The analysis unit 273-1 is adapted to maximize the S / N (Signal to Noise) ratio in the feedback signal and adaptively correct the phase shift and the frequency transition based on the received accumulated data and the phase information. The best demodulation method in the demodulator 272-1 is determined.

ウェイト係数算出部274−1は、解析部273−1で決定された復調方式を実現するために、受信データ蓄積部271−1からのデジタル信号に掛け合わせるウェイト係数を算出する。   The weight coefficient calculation unit 274-1 calculates a weight coefficient to be multiplied with the digital signal from the reception data storage unit 271-1 in order to realize the demodulation method determined by the analysis unit 273-1.

適応復調部272−1は、位相変調部13−1〜13−Mの位相変調で与えられる位相差のうち任意の位相差に対応している。まず、適応復調部272−1は、受信データ蓄積部271−1からのデジタル信号のうち対応した位相差の信号成分をパルス圧縮し、パルス圧縮後の信号をCFAR275−1へ出力すると共に、フィードバック信号として解析部273−1へ供給する。次に、適応復調部272−1は、ウェイト係数算出部274−1でフィードバック信号に基づいて算出されたウェイト係数を受け取り、このウェイト係数をデジタル信号に掛け合わせ、掛け合わせた後の信号に対してパルス圧縮を行う。こうして、適応復調部272−1は、受信データ蓄積部271−1からのデジタル信号における相関成分に対してパルス圧縮を行うことが可能となる。   The adaptive demodulation unit 272-1 corresponds to an arbitrary phase difference among the phase differences given by the phase modulation of the phase modulation units 13-1 to 13-M. First, adaptive demodulation section 272-1 performs pulse compression on the corresponding phase difference signal component of the digital signal from reception data storage section 271-1, and outputs the pulse-compressed signal to CFAR 275-1 as well as feedback. The signal is supplied to the analysis unit 273-1 as a signal. Next, adaptive demodulation section 272-1 receives the weight coefficient calculated based on the feedback signal by weight coefficient calculation section 274-1, multiplies the weight coefficient with the digital signal, and performs the multiplication on the signal after the multiplication. Pulse compression. In this way, the adaptive demodulator 272-1 can perform pulse compression on the correlation component in the digital signal from the received data storage unit 271-1.

CFAR275−1は、適応復調部272−1でパルス圧縮された信号を検波(振幅情報のみの信号に変換)し、注目レンジビンの周辺パルスの信号振幅からリファレンス振幅を算出し、リファレンス振幅に対する注目レンジビン振幅の比を表す信号として、振幅比信号を出力する。これにより、CFAR275−1は、目標物Tの検出を行う。   The CFAR 275-1 detects the signal compressed by the adaptive demodulator 272-1 (converts it into a signal having only amplitude information), calculates the reference amplitude from the signal amplitude of the peripheral pulse of the target range bin, and the target range bin with respect to the reference amplitude. An amplitude ratio signal is output as a signal representing the amplitude ratio. Accordingly, the CFAR 275-1 detects the target T.

以上の受信処理が受信アンテナ21−2〜21−Nにおいても行われ、受信アンテナ21−2におけるCFAR26−21〜26−2M及びCFAR275−2で目標物Tの検出が行われ、…、受信アンテナ21−NにおけるCFAR26−N1〜26−NM及びCFAR275−Nで目標物Tの検出が行われる。   The above reception processing is also performed in the reception antennas 21-2 to 21-N, and the target T is detected in the CFARs 26-21 to 26-2M and the CFAR 275-2 in the reception antenna 21-2. The target T is detected by CFAR26-N1 to 26-NM and CFAR275-N in 21-N.

統合部28は、受信アンテナ21−1におけるCFAR26−11〜26−1M及びCFAR275−1の検出結果、受信アンテナ21−2におけるCFAR26−21〜26−2M及びCFAR275−2の検出結果、…、及び受信アンテナ21−NにおけるCFAR26−N1〜26−NM及びCFAR275−Nの検出結果を統合して、目標物Tの有無を判定する。   The integrating unit 28 detects the detection results of the CFAR 26-11 to 26-1M and the CFAR 275-1 in the reception antenna 21-1, the detection result of the CFAR 26-21 to 26-2M and the CFAR 275-2 in the reception antenna 21-2,. The presence or absence of the target T is determined by integrating the detection results of the CFAR 26-N1 to 26-NM and the CFAR 275-N in the receiving antenna 21-N.

以上のように、上記一実施形態では、相関成分検出部27−1の解析部273−1及びウェイト係数算出部274−1で、適応復調部272−1から出力される信号のSN比を最大にするウェイト係数を算出する。そして、算出されたウェイト係数を受信データ蓄積部271−1からの信号に掛け合わせ、この信号に対して適応復調部272−1でパルス圧縮を行うようにしている。これにより、反射信号に含まれる互いに無相関の信号成分を復調部24−11〜24−1Nでパルス圧縮して目標物TをCFAR26−11〜26−1Mで検出すると共に、反射信号におけるM系統の無線信号の信号成分の相関成分を適応復調部272−1でパルス圧縮して目標物TをCFAR275−1で検出することが可能となる。すなわち、反射信号におけるM系統の無線信号の信号成分に相関が発生している場合であっても、相関成分から目標物Tを検出することが可能であるため、目標物の探知性能が劣化することは無い。   As described above, in the above embodiment, the SN ratio of the signal output from the adaptive demodulation unit 272-1 is maximized by the analysis unit 273-1 and the weight coefficient calculation unit 274-1 of the correlation component detection unit 27-1. The weight coefficient to be calculated is calculated. Then, the calculated weight coefficient is multiplied with the signal from the reception data storage unit 271-1, and the adaptive demodulation unit 272-1 performs pulse compression on this signal. Thereby, the uncorrelated signal components included in the reflected signal are pulse-compressed by the demodulating units 24-11 to 24-1N, and the target T is detected by the CFAR 26-11 to 26-1M, and the M systems in the reflected signal are detected. It is possible to detect the target T with the CFAR 275-1 by compressing the correlation component of the signal component of the wireless signal with the adaptive demodulator 272-1. That is, even when a correlation is generated in the signal components of the M-system radio signals in the reflected signal, the target T can be detected from the correlation components, so that the target detection performance is deteriorated. There is nothing.

したがって、本発明に係るレーダ装置及び受信機は、反射信号に相関成分が発生した場合であっても、目標物の探知性能を維持することができる。   Therefore, the radar device and the receiver according to the present invention can maintain the detection performance of the target even when the correlation component is generated in the reflected signal.

なお、この発明は上記一実施形態に限定されるものではない。例えば上記一実施形態では、相関成分検出部27−1〜27−Nが各受信系に設置されている例について説明したが、相関成分検出部27−1〜27−Nは相関成分検出装置として着脱可能であってもよい。すなわち、相関成分検出装置が設置されている受信系から相関成分検出装置を取り外すことができる。さらに、相関成分検出装置が設置されていない受信系がある場合、必要に応じてその受信系へ相関成分検出装置を取り付けることも可能である。   The present invention is not limited to the above-described embodiment. For example, in the above embodiment, the example in which the correlation component detection units 27-1 to 27-N are installed in each reception system has been described. However, the correlation component detection units 27-1 to 27-N are used as the correlation component detection devices. It may be removable. That is, the correlation component detection device can be removed from the reception system in which the correlation component detection device is installed. Further, when there is a reception system in which no correlation component detection device is installed, the correlation component detection device can be attached to the reception system as necessary.

また、上記一実施形態では、信号生成部12−1〜12−Mで送信パルスに直線状の周波数変調を加えた変調パルス信号を生成し、復調部25−11〜25−1M及び適応復調部272−1でパルス圧縮する例について説明したが、信号生成部12−1〜12−Mにおける変調方式がこの方式に限定される訳ではない。例えば、信号生成部12−1〜12−Mで送信パルスに対して離散値を取る符号系列により離散的に位相変調を行い、復調部25−11〜25−1M及び適応復調部272−1で符号系列の相関処理によりパルス圧縮を行う方式であっても同様に実施可能である。   In the above embodiment, the signal generators 12-1 to 12-M generate modulated pulse signals obtained by adding linear frequency modulation to the transmission pulses, and the demodulator units 25-11 to 25-1M and the adaptive demodulator units. Although an example of pulse compression in 272-1 has been described, the modulation scheme in the signal generation units 12-1 to 12-M is not limited to this scheme. For example, the signal generators 12-1 to 12 -M discretely perform phase modulation with a code sequence that takes discrete values for the transmission pulses, and the demodulator 25-11 to 25-1 M and the adaptive demodulator 272-1 A method of performing pulse compression by code sequence correlation processing can be similarly implemented.

また、上記一実施形態では、CFARによりパルス圧縮後の信号から目標物を検出する例について説明したが、目標物を検出する検出部はCFARに限定されるわけではなく、その他の検出方式に準拠した検出部であっても同様に実施可能である。   In the above-described embodiment, the example in which the target is detected from the signal after pulse compression by CFAR has been described. However, the detection unit for detecting the target is not limited to CFAR, and conforms to other detection methods. Even if it is the detection part which carried out, it can implement similarly.

さらに、この発明は、実施段階ではその要旨を逸脱しない範囲で構成要素を変形して具体化できる。また、上記実施形態に開示されている複数の構成要素の適宜な組み合わせにより、種々の発明を形成できる。例えば、実施形態に示される全構成要素から幾つかの構成要素を削除してもよい。   Furthermore, the present invention can be embodied by modifying the constituent elements without departing from the spirit of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment.

1…レーダ装置
10−1〜10−M…送信機
11−1〜11−M…送信アンテナ
12−1〜12−M…信号生成部
13−1〜13−M…位相変調部
14−1〜14−M…周波数変換部
20…受信機
21−1〜21−N…受信アンテナ
22−1〜22−N…周波数変換部
23−1〜23−N…A/D変換部
24−1〜24−N…分配部
25−11〜25−1M,25−N1〜25−NM…復調部
26−11〜26−1M,26−N1〜26−NM…CFAR
27−1〜27−N…相関成分検出部
271−1〜271−N…受信データ蓄積部
272−1〜272−N…適応復調部
273−1〜273−N…解析部
274−1〜274−N…ウェイト係数算出部
275−1〜275−N…CFAR
28…統合部
DESCRIPTION OF SYMBOLS 1 ... Radar apparatus 10-1 to 10-M ... Transmitter 11-1 to 11-M ... Transmitting antenna 12-1 to 12-M ... Signal generation part 13-1 to 13-M ... Phase modulation part 14-1 14-M ... frequency conversion unit 20 ... receivers 21-1 to 21-N ... reception antennas 22-1 to 22-N ... frequency conversion units 23-1 to 23-N ... A / D conversion units 24-1 to 24 -N: distribution unit 25-11 to 25-1M, 25-N1 to 25-NM ... demodulation unit 26-11 to 26-1M, 26-N1 to 26-NM ... CFAR
27-1 to 27-N ... correlation component detection units 271-1 to 271-N ... received data storage units 272-1 to 272-N ... adaptive demodulation units 273-1 to 273-N ... analysis units 274-1 to 274 -N ... Weight coefficient calculation unit 275-1 to 275-N ... CFAR
28 ... Integration Department

Claims (6)

互いに無相関となるように変調された無線信号を空間へ向けて送信するM(Mは2以上の自然数)個の送信機と、前記空間へ向けて送信されたM系統の無線信号が空間中の目標物により反射された反射信号を受信する受信機とを具備するレーダ装置において、
前記受信機は、
前記反射信号を互いに独立して受信するN(Nは2以上の自然数)系統の受信アンテナと、
前記受信系統毎に設置され、前記受信アンテナで受信された反射信号を中間周波数帯の信号に変換する周波数変換部と、
前記受信系統毎に設置され、前記中間周波数帯の信号をデジタル信号に変換するアナログ−デジタル変換部と、
前記受信系統毎に設置され、前記デジタル信号をM系統に分配する分配部と、
前記分配されたM系統毎に設置され、それぞれが前記M系統の無線信号のいずれかの変調方式に対応し、前記分配されたデジタル信号に含まれるM系統の無線信号の信号成分のうち対応した変調方式の信号成分のみを復調する復調部と、
前記分配されたM系統毎に設置され、前記復調部で復調された信号から前記目標物を検出する検出部と、
前記受信系統毎に設置され、前記アナログ−デジタル変換部から前記デジタル信号を受け取り、当該デジタル信号に含まれるM系統の無線信号の信号成分が互いに相関する相関成分を復調し、当該復調した信号から前記目標物を検出する相関成分検出手段と、
前記受信系統毎のM系統の検出部による検出結果と、前記受信系統毎の前記相関成分検出手段による検出結果とを統合する統合部と
を備えることを特徴とするレーダ装置。
There are M (M is a natural number of 2 or more) transmitters that transmit radio signals modulated so as to be uncorrelated with each other toward the space, and M radio signals transmitted toward the space are in the space. A radar apparatus comprising: a receiver that receives a reflected signal reflected by the target of
The receiver
Receiving antennas of N (N is a natural number of 2 or more) systems that receive the reflected signals independently of each other;
A frequency conversion unit that is installed for each reception system and converts a reflected signal received by the reception antenna into a signal in an intermediate frequency band;
An analog-to-digital converter that is installed for each reception system and converts the signal in the intermediate frequency band into a digital signal;
A distribution unit that is installed for each reception system and distributes the digital signal to M systems;
Installed for each of the distributed M systems, each corresponding to one of the modulation systems of the M wireless signals, and corresponding to the signal components of the M wireless signals included in the distributed digital signal A demodulator that demodulates only the signal component of the modulation scheme;
A detection unit which is installed for each of the distributed M systems and detects the target from the signal demodulated by the demodulation unit;
Installed for each reception system, receives the digital signal from the analog-digital conversion unit, demodulates a correlation component in which signal components of radio signals of M systems included in the digital signal correlate with each other, and uses the demodulated signal Correlation component detection means for detecting the target;
A radar apparatus comprising: an integration unit that integrates a detection result of the M system detection unit for each reception system and a detection result of the correlation component detection unit for each reception system.
前記送信機は、
予め設定された変調方式でパルス信号を変調した変調パルス信号を生成する変調パルス生成部と、
他の送信機から送信される無線信号と直交するように前記変調パルス信号に対して位相変調を施す位相変調部と、
前記位相変調された信号を送信処理する送信処理部と、
前記送信処理された信号を空間へ向けて送信する送信アンテナと
を備えることを特徴とするレーダ装置。
The transmitter is
A modulation pulse generation unit that generates a modulation pulse signal obtained by modulating the pulse signal with a preset modulation method;
A phase modulation unit that performs phase modulation on the modulated pulse signal so as to be orthogonal to a radio signal transmitted from another transmitter;
A transmission processing unit for transmitting the phase-modulated signal;
A radar apparatus comprising: a transmission antenna that transmits the signal subjected to the transmission process toward a space.
前記相関成分検出手段は、
前記アナログ−デジタル変換部からの前記デジタル信号を蓄積するデータ蓄積部と、
前記データ蓄積部に蓄積された蓄積データ及び前記M個の送信機から通知された前記M系統の無線信号の変調方式に関する変調情報に基づいて、フィードバック信号のSN(Signal to Noise)比が最大となるように、前記デジタル信号に掛け合わせるウェイトを算出するウェイト算出部と、
前記M系統の無線信号のいずれかの変調方式に対応し、前記アナログ−デジタル変換部からのデジタル信号に対して前記ウェイトを掛け合わせ後、当該信号に含まれるM系統の無線信号の信号成分のうち対応した変調方式の信号成分のみを復調して出力すると共に、前記復調した信号を前記フィードバック信号として前記ウェイト算出部へ出力する適応復調部と、
前記適応復調部からの信号から前記目標物を検出する検出部と
を備えることを特徴とするレーダ装置。
The correlation component detection means includes
A data storage unit for storing the digital signal from the analog-digital conversion unit;
Based on the storage data stored in the data storage unit and the modulation information regarding the modulation system of the M systems of radio signals notified from the M transmitters, the SN (Signal to Noise) ratio of the feedback signal is maximized. A weight calculating unit for calculating a weight to be multiplied with the digital signal;
Corresponding to any modulation scheme of the M-system radio signal, after multiplying the digital signal from the analog-digital converter by the weight, the signal component of the M-system radio signal included in the signal An adaptive demodulator that demodulates and outputs only the signal component of the corresponding modulation scheme, and outputs the demodulated signal as the feedback signal to the weight calculator;
A radar apparatus comprising: a detection unit that detects the target from a signal from the adaptive demodulation unit.
M(Mは2以上の自然数)個の送信機から互いに無相関となるように変調されて送信されたM系統の無線信号が空間中の目標物により反射された反射信号を互いに独立して受信するN(Nは2以上の自然数)系統の受信アンテナと、
前記受信系統毎に設置され、前記受信アンテナで受信された反射信号を中間周波数帯の信号に変換する周波数変換部と、
前記受信系統毎に設置され、前記中間周波数帯の信号をデジタル信号に変換するアナログ−デジタル変換部と、
前記受信系統毎に設置され、前記デジタル信号をM系統に分配する分配部と、
前記分配されたM系統毎に設置され、それぞれが前記M系統の無線信号のいずれかの変調方式に対応し、前記分配されたデジタル信号に含まれるM系統の無線信号の信号成分のうち対応した変調方式の信号成分のみを復調する復調部と、
前記分配されたM系統毎に設置され、前記復調部で復調された信号から前記目標物を検出する検出部と、
前記受信系統毎に設置され、前記アナログ−デジタル変換部から前記デジタル信号を受け取り、当該デジタル信号に含まれるM系統の無線信号の信号成分が互いに相関する相関成分を復調し、当該復調した信号から前記目標物を検出する相関成分検出手段と、
前記受信系統毎のM系統の検出部による検出結果と、前記受信系統毎の前記相関成分検出手段による検出結果とを統合する統合部と
を具備することを特徴とする受信機。
M-system radio signals modulated and transmitted from M (M is a natural number of 2 or more) transmitters so as to be uncorrelated with each other receive reflected signals reflected by targets in space independently of each other. N (N is a natural number of 2 or more) system receiving antennas,
A frequency conversion unit that is installed for each reception system and converts a reflected signal received by the reception antenna into a signal in an intermediate frequency band;
An analog-to-digital converter that is installed for each reception system and converts the signal in the intermediate frequency band into a digital signal;
A distribution unit that is installed for each reception system and distributes the digital signal to M systems;
Installed for each of the distributed M systems, each corresponding to one of the modulation systems of the M wireless signals, and corresponding to the signal components of the M wireless signals included in the distributed digital signal A demodulator that demodulates only the signal component of the modulation scheme;
A detection unit which is installed for each of the distributed M systems and detects the target from the signal demodulated by the demodulation unit;
Installed for each reception system, receives the digital signal from the analog-digital conversion unit, demodulates a correlation component in which signal components of radio signals of M systems included in the digital signal correlate with each other, and uses the demodulated signal Correlation component detection means for detecting the target;
A receiver comprising: an integration unit that integrates a detection result of the M system detection unit for each reception system and a detection result of the correlation component detection unit for each reception system.
前記相関成分検出手段は、
前記アナログ−デジタル変換部からの前記デジタル信号を蓄積するデータ蓄積部と、
前記データ蓄積部に蓄積された蓄積データ及び前記M個の送信機から通知された前記M系統の無線信号の変調方式に関する変調情報に基づいて、フィードバック信号のSN(Signal to Noise)比が最大となるように、前記デジタル信号に掛け合わせるウェイトを算出するウェイト算出部と、
前記M系統の無線信号のいずれかの変調方式に対応し、前記アナログ−デジタル変換部からのデジタル信号に対して前記ウェイトを掛け合わせ後、当該信号に含まれるM系統の無線信号の信号成分のうち対応した変調方式の信号成分のみを復調して出力すると共に、前記復調した信号を前記フィードバック信号として前記ウェイト算出部へ出力する適応復調部と、
前記適応復調部からの信号から前記目標物を検出する検出部と
を備えることを特徴とする受信機。
The correlation component detection means includes
A data storage unit for storing the digital signal from the analog-digital conversion unit;
Based on the storage data stored in the data storage unit and the modulation information regarding the modulation system of the M systems of radio signals notified from the M transmitters, the SN (Signal to Noise) ratio of the feedback signal is maximized. A weight calculating unit for calculating a weight to be multiplied with the digital signal;
Corresponding to any modulation scheme of the M-system radio signal, after multiplying the digital signal from the analog-digital converter by the weight, the signal component of the M-system radio signal included in the signal An adaptive demodulator that demodulates and outputs only the signal component of the corresponding modulation scheme, and outputs the demodulated signal as the feedback signal to the weight calculator;
And a detector for detecting the target from the signal from the adaptive demodulator.
M(Mは2以上の自然数)個の送信機から互いに無相関となるように変調されて送信されたM系統の無線信号が空間中の目標物により反射された反射信号を受け取り、当該信号のデータを蓄積するデータ蓄積部と、
前記データ蓄積部に蓄積された蓄積データ及び前記M個の送信機から通知された前記M系統の無線信号の変調方式に関する変調情報に基づいて、フィードバック信号のSN(Signal to Noise)比が最大となるように、前記反射信号に掛け合わせるウェイトを算出するウェイト算出部と、
前記M系統の無線信号のいずれかの変調方式に対応し、前記反射信号に対して前記ウェイトを掛け合わせ後、当該信号に含まれるM系統の無線信号の信号成分のうち対応した変調方式の信号成分のみを復調して出力すると共に、前記復調した信号を前記フィードバック信号として前記ウェイト算出部へ出力する適応復調部と、
前記適応復調部からの信号から前記目標物を検出する検出部と
を具備することを特徴とする相関成分検出装置。
The M radio signals modulated and transmitted so as to be uncorrelated with each other from M (M is a natural number of 2 or more) transmitters receive a reflected signal reflected by a target in space, A data storage unit for storing data;
Based on the storage data stored in the data storage unit and the modulation information regarding the modulation system of the M systems of radio signals notified from the M transmitters, the SN (Signal to Noise) ratio of the feedback signal is maximized. A weight calculating unit for calculating a weight to be multiplied with the reflected signal;
Corresponding to any modulation scheme of the M radio signals, after multiplying the reflected signal by the weight, the signal of the corresponding modulation scheme among the signal components of the M radio signals included in the signal An adaptive demodulator that demodulates and outputs only the component, and outputs the demodulated signal as the feedback signal to the weight calculator;
A correlation component detection apparatus comprising: a detection unit that detects the target from a signal from the adaptive demodulation unit.
JP2009050973A 2009-03-04 2009-03-04 Radar apparatus, receiver, and correlation component detector Abandoned JP2010203965A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009050973A JP2010203965A (en) 2009-03-04 2009-03-04 Radar apparatus, receiver, and correlation component detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009050973A JP2010203965A (en) 2009-03-04 2009-03-04 Radar apparatus, receiver, and correlation component detector

Publications (1)

Publication Number Publication Date
JP2010203965A true JP2010203965A (en) 2010-09-16

Family

ID=42965587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009050973A Abandoned JP2010203965A (en) 2009-03-04 2009-03-04 Radar apparatus, receiver, and correlation component detector

Country Status (1)

Country Link
JP (1) JP2010203965A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012068224A (en) * 2010-08-23 2012-04-05 Toshiba Corp Mimo radar system, transmitting unit, receiving unit, and mimo radar signal processing method
CN102508210A (en) * 2011-10-20 2012-06-20 华中科技大学 Lightning pulse signal detection and interference resistance device
JP2012251953A (en) * 2011-06-06 2012-12-20 Toshiba Corp Radar device and received data processing method
JP2013024687A (en) * 2011-07-20 2013-02-04 Keio Gijuku Target distinguishing system
JP2013029402A (en) * 2011-07-28 2013-02-07 Toshiba Corp Radar device and reception data processing method
JP2013068433A (en) * 2011-09-20 2013-04-18 Fujitsu Ltd Distance detection and measuring apparatus and distance detection and measuring method
JP2013130527A (en) * 2011-12-22 2013-07-04 Mitsubishi Electric Corp Rader system
JP2014519038A (en) * 2011-06-01 2014-08-07 パナソニック株式会社 High-speed, high-resolution, wide-range, low-power analog correlator and radar sensor
WO2016031882A1 (en) * 2014-08-28 2016-03-03 日本無線株式会社 Orthogonal separation device and orthogonal separation method
JP2017032531A (en) * 2015-08-06 2017-02-09 株式会社東芝 Radar device and radar signal processing method
CN109342828A (en) * 2018-09-05 2019-02-15 国网湖北省电力有限公司电力科学研究院 A kind of lightening pulse signal detecting method based on frequency domain constant false alarm

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000346929A (en) * 1999-06-03 2000-12-15 Mitsubishi Electric Corp Target correlation apparatus
JP2001166046A (en) * 1999-12-06 2001-06-22 Mitsubishi Electric Corp Target correlation device
WO2005088884A1 (en) * 2004-03-11 2005-09-22 Matsushita Electric Industrial Co., Ltd. Data transmission method and data reception method
JP2006101245A (en) * 2004-09-30 2006-04-13 Toshiba Corp Receiver
JP2006157421A (en) * 2004-11-29 2006-06-15 Nippon Hoso Kyokai <Nhk> Pilot carrier transmitting and receiving method, transmitter, and receiver
JP2006229503A (en) * 2005-02-16 2006-08-31 Sony Corp Radio communication apparatus, radio communication method, and radio communication system
JP2007129697A (en) * 2005-10-05 2007-05-24 Matsushita Electric Ind Co Ltd Wireless communication apparatus
JP2007327942A (en) * 2006-05-12 2007-12-20 Mitsubishi Electric Corp Radar signal processor and radar signal processing method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000346929A (en) * 1999-06-03 2000-12-15 Mitsubishi Electric Corp Target correlation apparatus
JP2001166046A (en) * 1999-12-06 2001-06-22 Mitsubishi Electric Corp Target correlation device
WO2005088884A1 (en) * 2004-03-11 2005-09-22 Matsushita Electric Industrial Co., Ltd. Data transmission method and data reception method
JP2006101245A (en) * 2004-09-30 2006-04-13 Toshiba Corp Receiver
JP2006157421A (en) * 2004-11-29 2006-06-15 Nippon Hoso Kyokai <Nhk> Pilot carrier transmitting and receiving method, transmitter, and receiver
JP2006229503A (en) * 2005-02-16 2006-08-31 Sony Corp Radio communication apparatus, radio communication method, and radio communication system
JP2007129697A (en) * 2005-10-05 2007-05-24 Matsushita Electric Ind Co Ltd Wireless communication apparatus
JP2007327942A (en) * 2006-05-12 2007-12-20 Mitsubishi Electric Corp Radar signal processor and radar signal processing method

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012068224A (en) * 2010-08-23 2012-04-05 Toshiba Corp Mimo radar system, transmitting unit, receiving unit, and mimo radar signal processing method
JP2014519038A (en) * 2011-06-01 2014-08-07 パナソニック株式会社 High-speed, high-resolution, wide-range, low-power analog correlator and radar sensor
JP2012251953A (en) * 2011-06-06 2012-12-20 Toshiba Corp Radar device and received data processing method
JP2013024687A (en) * 2011-07-20 2013-02-04 Keio Gijuku Target distinguishing system
JP2013029402A (en) * 2011-07-28 2013-02-07 Toshiba Corp Radar device and reception data processing method
JP2013068433A (en) * 2011-09-20 2013-04-18 Fujitsu Ltd Distance detection and measuring apparatus and distance detection and measuring method
CN102508210A (en) * 2011-10-20 2012-06-20 华中科技大学 Lightning pulse signal detection and interference resistance device
JP2013130527A (en) * 2011-12-22 2013-07-04 Mitsubishi Electric Corp Rader system
WO2016031882A1 (en) * 2014-08-28 2016-03-03 日本無線株式会社 Orthogonal separation device and orthogonal separation method
JP2016050778A (en) * 2014-08-28 2016-04-11 日本無線株式会社 Orthogonal separation apparatus and orthogonal separation method
EP3187894A4 (en) * 2014-08-28 2018-03-14 Japan Radio Co., Ltd. Orthogonal separation device and orthogonal separation method
US10459071B2 (en) 2014-08-28 2019-10-29 Japan Radio Co., Ltd. Orthogonal separation device and orthogonal separation method
JP2017032531A (en) * 2015-08-06 2017-02-09 株式会社東芝 Radar device and radar signal processing method
CN109342828A (en) * 2018-09-05 2019-02-15 国网湖北省电力有限公司电力科学研究院 A kind of lightening pulse signal detecting method based on frequency domain constant false alarm

Similar Documents

Publication Publication Date Title
JP2010203965A (en) Radar apparatus, receiver, and correlation component detector
KR101595213B1 (en) Satellite navigation signal, generating method, generating device, receiving method and receiving device
US9448303B2 (en) Radar device
US9239378B2 (en) Radar device
US20090103593A1 (en) Array Antenna System and Spread Spectrum Beamformer Method
JP2012251820A5 (en)
US10921434B2 (en) Radar system
CA2672460A1 (en) Location of wideband ofdm transmitters with limited receiver bandwidth
JP2006060765A5 (en)
US8284853B2 (en) Apparatus and method for spatial multiplexing with backward compatibility in a multiple input multiple output wireless communication system
RU2009134507A (en) RADIO TRANSMISSION SYSTEM AND MUTUAL INTERFERENCE COMPENSATION METHOD
JP2010243237A (en) Target detection method and radar device and array antenna device
US5661757A (en) Radio-card communication system
JP5417187B2 (en) Correlation reception processing device
JP2015190944A (en) Rader system, signal processor, and signal processing method
JP6475042B2 (en) Wireless transmitter, wireless receiver, and wireless communication system
KR100940217B1 (en) Multiple antenna repeater apparatus and method for using in wireless communication system
JP2001108741A (en) Device and method for transmission and reception
CA2714748C (en) Transmitter/receiver and data transmission/reception method in communication system
JP6388344B2 (en) Wireless communication system
KR20090015299A (en) Apparatus and method for generating effective signal to noise ratio per stream in multiple input multiple output wireless communication system
JP5745293B2 (en) Receiving method and receiving apparatus for spread spectrum communication system
JP2001223623A (en) Digital radio communication system
KR102200530B1 (en) Method and system for separately receive of direct signal and target reflected signal in multistatic PCL(Passive Coherent Location) systems
JP2007174463A (en) Communication system, receiver, and transmitter

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20110217

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120719

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20121113

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130115

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20131022

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20131205

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20131212

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20131219

A762 Written abandonment of application

Free format text: JAPANESE INTERMEDIATE CODE: A762

Effective date: 20131224

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20131226

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20140109

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20140116