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51. 发明专利

JPS63247682A TRACKING RADAR 失效
公开(公告)号：JPS63247682A
公开(公告)日：1988-10-14
申请号：JP8190687
申请日：1987-04-02
申请人： JAPAN TECH RES & DEV INST
发明人： SUZUKI KEIZO , KIMATA KAZUO , KUNITOKI KOUICHI , YANASE KAZUYA
IPC分类号： G01S13/66 , G01S7/36 , G01S13/26 , G01S13/50 , G01S13/53
摘要： PURPOSE:To obtain a radar capable of narrow-width reception by discriminating a distance signal and a Doppler frequency by fast Fourier transformation at the same time. CONSTITUTION:A reflected wave from a target is passed through a transmission- reception switch 2 and branched to mixers 3 and 4 and branched waves are passed through a sampler 5 and an A/D converter 6 and processed through the fast Fourier transformation of a Fourier transformer 7 to obtain data on a frequency base. Then a discriminator 8 uses the output of the fast Fourier transformation to search for, detect, acquire, and track the distance and Doppler frequency of the received signal, thereby obtaining a distance signal output including information on the relative distance to the target and a Doppler signal containing information on the relative speed to the target. Thus, the fast Fourier transformation is employed to track the distance and speed at the same time, so reception in a narrow band determined by the frequency resolution of the fast Fourier transformation is performed and the minimum reception sensitivity can be lowered. Further, even when the distance or Doppler frequency is disturbed, the received signal can be tracked continuously.

52. 实用新型

JPS6333479U 失效
公开(公告)号：JPS6333479U
公开(公告)日：1988-03-03
申请号：JP12601386
申请日：1986-08-19
IPC分类号： G01S7/32 , G01S13/52 , G01S13/53

53. 发明专利

JPS61184475A RADAR RECEIVING APPARATUS 失效
公开(公告)号：JPS61184475A
公开(公告)日：1986-08-18
申请号：JP2349485
申请日：1985-02-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： OMURO TAKASHI
IPC分类号： G01S7/28 , G01S7/292 , G01S13/50 , G01S13/53
摘要： PURPOSE:To prevent the lowering in the clutter ratio to a signal, performing restricted weighing so as not to remove a Doppler signal concerned even when a clutter is superposed to the Doppler frequency of a target signal. CONSTITUTION:Doppler frequency to be possessed by a target signal is fed back to be inputted to a clutter removal signal processing means 41 from a tracking filter means 60 and a restricted condition is applied so as not to erase said Doppler frequency by the load calculation in the clutter removal signal processing means 41 to perform the minimization of output power. The clutter removal signal processing means 41 transmits the target signal to a target detection means 50 without attenuating the same even if the Doppler frequency of the target signal is superposed to an energy part having a large clutter spectrum to enhance the descovery probability of a target.

54. 发明专利

JPS60128381A RADAR SIGNAL PROCESSOR 失效
公开(公告)号：JPS60128381A
公开(公告)日：1985-07-09
申请号：JP23674483
申请日：1983-12-15
申请人： NIPPON ELECTRIC CO
发明人： NAKAMURA HIROSHI , HAGISAWA TOSHIHIKO
IPC分类号： G01S13/52 , G01S13/524 , G01S13/53
摘要： PURPOSE:To perform clutter removal and suppression by any region by making a separation by using the difference between Doppler frequency components of a target and clutter, then performing clutter suppression airthmetic. CONSTITUTION:An echo from a searching space is received by an antenna 1 and inputted to a frequency mixer 4 through a duplexer 2, and the signal is converted into an intermediate frequency and also amplfied. Then, the output of the frequency mixer 4 and a reference signal generated by a reference signal generator 5 are inputted to an in-phase component synchronous detector 6 and an orthogonal component detector 7 to extract the Doppler frequency that a reflecting body has. Then, the signal is inputted to the Dopper frequency extractor 9 consisting of plural Doppler fiters 8 and outputted to the Doppler filter corresponding to the Doppler frequency of the input signal. A clutter suppression computting element 11 calcuates a mean value and a square mean value from the absolute value signal of the output of every filter calculated by an absolute value calculating device 10 to perform the clutter suppression arithmetic processing.

55. 发明专利

JPS5946567A Pulse doppler radar 失效
标题翻译：脉冲多普勒雷达
公开(公告)号：JPS5946567A
公开(公告)日：1984-03-15
申请号：JP15731382
申请日：1982-09-09
申请人： Mitsubishi Electric Corp
发明人： KURIHARA NOBORU
IPC分类号： G01S13/64 , G01S13/53
CPC分类号： G01S13/53
摘要： PURPOSE:To enable the production of a DF output equivalent in the characteristic to a high speed Fourier transformer output of 2N point simply by arranging a register and an adder between the number N of DF outputs of a high speed Fourier transformer and an amplitude detector to add the number N of DF outputs twice. CONSTITUTION:A received signal digitally converted with a receiver 3 is sent to a digital signal processor 4 and then to amplitude weighting circuit 6 to make a Doppler filter (DF) of a low side lobe characteristic via a clutter removing filter 5. Then, a frequency analysis is performed with a N point high speed Fourier transformer to obtain the number N of DF outputs in the output form of 1/Q2CH. An adder 15 adds data of registers A13 and A14 at each 1/Q2CH of DPs. These digital signal processing produces a DF characteristic equivalent to that of a 2N point high speed Fourier transformer thereby improving frequency resolution, identifying property of signals and clutter removing capacity substantially.
摘要翻译：目的：通过在高速傅里叶变换器的DF输出的数量N和振幅检测器之间布置寄存器和加法器，能够将特性中的等效的DF输出生成到2N点的高速傅立叶变换器输出，将DF输出数N加上两次。构成：用接收机3数字转换的接收信号被发送到数字信号处理器4，然后被送到振幅加权电路6，以通过杂波去除滤波器5制作低旁波特性的多普勒滤波器（DF）。然后，使用N点高速傅里叶变换器进行频率分析，以1 / Q2CH的输出形式获得DF输出的数量N. 加法器15将寄存器A13和A14的数据加到DP的每1 / Q2CH处。这些数字信号处理产生与2N点高速傅立叶变换器相当的DF特性，从而提高了频率分辨率，基本上识别了信号的性质和杂波去除能力。

56. 发明专利

JPS595875B2 JPS595875B2 - 失效
公开(公告)号：JPS595875B2
公开(公告)日：1984-02-07
申请号：JP10901573
申请日：1973-09-28
申请人： Tokyo Shibaura Electric Co
发明人： KATAYAMA TETSUO
IPC分类号： G01S7/40 , G01S13/52 , G01S13/53

57. 发明专利

JPS52113190A DOPPLER RADAR 失效
公开(公告)号：JPS52113190A
公开(公告)日：1977-09-22
申请号：JP544577
申请日：1977-01-22
申请人： NAT RES DEV
发明人： KENISU UOORUTA GUREI
IPC分类号： G01S13/64 , G01S13/53 , G01S13/58

58. 发明专利

JPS5180192A 失效
公开(公告)号：JPS5180192A
公开(公告)日：1976-07-13
申请号：JP477975
申请日：1975-01-08
申请人： BOEICHO GIJUTSU KENKYU HONBUCH , MITSUBISHI ELECTRIC CORP
发明人： TAKISHIMA MAOMI , IWABE AKIRA
IPC分类号： G01S13/52 , G01S13/53

59. 发明专利

JPS4929115B1 失效
公开(公告)号：JPS4929115B1
公开(公告)日：1974-08-01
申请号：JP4522870
申请日：1970-05-28
IPC分类号： G01S7/32 , G01S13/52 , G01S13/53 , G01S13/64

60. 发明专利

JP6818541B2 レーダ装置および測位方法有权
公开(公告)号：JP6818541B2
公开(公告)日：2021-01-20
申请号：JP2016249835
申请日：2016-12-22
申请人：パナソニック株式会社
发明人：岸上高明
IPC分类号： G01S13/53

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