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91. 发明专利

JP2003215232A POLARIZED WAVE RADAR AND ITS PULSE TRANSMISSION/ RECEPTION METHOD 审中-公开
公开(公告)号：JP2003215232A
公开(公告)日：2003-07-30
申请号：JP2002012058
申请日：2002-01-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： SUWA HIROSHI , KIRIMOTO TETSUO , NONAKA CHIKAFUSA
IPC分类号： G01S7/28 , G01S7/292 , G01S13/87
摘要： PROBLEM TO BE SOLVED: To obtain a new polarized wave radar shortening observation time and suppressing degradation of distance resolution by combining the polarized wave radar and a step frequency method. SOLUTION: The radar comprises a transmitter from which two pulses with different frequencies are simultaneously emitted from a first and a second transmission/reception antennas having different polarization characteristics from each other, and pulses are transmitted a plurality of times with stepwise variation of the frequency, a receiver receiving pulses reflected by a target with the first transmission/reception antenna and the second transmission/ reception antenna, separating the received pulses by the frequency, frequency- converting to medium frequency signals, phase-detecting the received signal, and AD converting for outputting, and a signal processing means for accumulating the received signal to a memory, and obtaining a range profile from the received signals by inverse Fourier transform. COPYRIGHT: (C)2003,JPO

92. 发明专利

JP2003057338A Target observation device and target observation method 有权
标题翻译：目标观测装置和目标观测方法
公开(公告)号：JP2003057338A
公开(公告)日：2003-02-26
申请号：JP2001249381
申请日：2001-08-20
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： IWAMOTO MASAFUMI , HASEGAWA HIDEKI , KIRIMOTO TETSUO , KAWABATA KIYOUSUKE
IPC分类号： G01S13/89
摘要： PROBLEM TO BE SOLVED: To solve problems that since the rotation axis of an observation target 11 is required to perpendicularly cross to an xy plane, for example, in the case where the orbit of an aircraft moves on a curve by turbulence of an air current or where the orbit draws an arc along the surface of the globe by long observation time, an image of an observation target 11 is deteriorated.
SOLUTION: A phase error contained in a received signal of a transmitter- receiver is compensated in consideration of the orbit of a radar platform and the position of the observation target 11. Thereby, even if a transmit-receive antenna 21 moves on the curve, a high resolution image of a target can be observed.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了解决由于需要观察目标11的旋转轴垂直于xy平面的问题，例如在航空器的轨道在气流的湍流的曲线上移动的情况下或者通过长时间的观察时间，轨道沿着地球表面绘制电弧，观察对象11的图像劣化。解决方案：考虑到雷达平台的轨道和观测目标11的位置，补偿发射机 - 接收机的接收信号中包含的相位误差。由此，即使发射 - 接收天线21在曲线上移动，可以观察到目标的高分辨率图像。

93. 发明专利

JP2003035767A Clutter suppressing device and clutter suppressing method 有权
标题翻译：离合器抑制装置和离合器抑制方法
公开(公告)号：JP2003035767A
公开(公告)日：2003-02-07
申请号：JP2002104899
申请日：2002-04-08
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： HARASAWA YASUHIRO , KIRIMOTO TETSUO , SEKIGUCHI TAKASHI
IPC分类号： G01S7/285 , G01S13/22
摘要： PROBLEM TO BE SOLVED: To obtain a clutter suppressing device capable of automatically performing suppression processing in the optimum order of the filter. SOLUTION: A clutter center frequency estimation means 6 estimates the center frequency of the clutter. A filter coefficient calculation means 1a and multiple zero point processing means 71-70+N-1 calculate filter coefficients to form zero points of frequency characteristic for the estimated value. Filter coefficient calculation means 2a-2N calculate filter coefficients so as to allocate the zero points of filters for the estimated value. Filter means 2a-2N use the filter coefficient at every different pulse interval by a stagger/trigger system to suppress the clutter in a receiving signal. A filter order selection means 3 calculates the input/output signal power ratio of the filter means 2a-2N from the received signal and the output signals of the filter means 2a-2N to determine the order of the whole of the filters on the basis of a change in the power ratio. The output signal selection means 4 changes over an output signal on the basis of a selection result.
摘要翻译：要解决的问题：获得能够以滤波器的最佳顺序自动执行抑制处理的杂波抑制装置。解决方案：杂波中心频率估计装置6估计杂波的中心频率。滤波器系数计算装置1a和多个零点处理装置71-70 + N-1计算滤波器系数以形成估计值的零点频率特性。滤波器系数计算装置2a-2N计算滤波器系数，以便为估计值分配滤波器的零点。滤波器装置2a-2N通过交错/触发系统以每个不同的脉冲间隔使用滤波器系数来抑制接收信号中的杂波。滤波器顺序选择装置3根据接收信号和滤波器装置2a-2N的输出信号计算滤波器装置2a-2N的输入/输出信号功率比，以根据以下方式确定整个滤波器的顺序功率比的变化。输出信号选择装置4基于选择结果改变输出信号。

94. 发明专利

JP2002243835A CLUTTER SUPPRESSING DEVICE AND METHOD THEREFOR 审中-公开
公开(公告)号：JP2002243835A
公开(公告)日：2002-08-28
申请号：JP2001208026
申请日：2001-07-09
申请人： MITSUBISHI ELECTRIC CORP
发明人： SUWA HIROSHI , YAMAMOTO KAZUHIKO , IWAMOTO MASAFUMI , KIRIMOTO TETSUO , NONAKA CHIKAFUSA
IPC分类号： G01S7/32 , G01S7/02 , G01S7/295
摘要： PROBLEM TO BE SOLVED: To obtain a clutter suppressing device and method capable of suppressing clutters of which the distribution is not completely coherent. SOLUTION: The clutter suppressing device comprises two antennas 9 and 10 with polarization characteristics orthogonal to each other, a polarization switch 1 for driving one antenna at transmission and two antennas at reception, an observation scattering vector database 2 for storing observation scattering vectors to be observed, a clutter main scattering vector extracting/accumulating means 4A for extracting and accumulating main scattering vectors from the scattering vectors of the clutters obtained by previous observation or logic computations, a clutter main component suppressing means 3 for suppressing the main scattering vector components of the clutters accumulated in the clutter main scattering vector extracting/accumulating means 4A from the observation scattering vectors stored in the observation scattering vector database 2, and a total electric power computing means 5 for computing the total eclectic power of the scattering vectors after the clutter main components are suppressed.

95. 发明专利

JP2002236172A RADAR DEVICE 失效
公开(公告)号：JP2002236172A
公开(公告)日：2002-08-23
申请号：JP2001141677
申请日：2001-05-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMAMOTO KAZUHIKO , KIRIMOTO TETSUO , YAMAMOTO MASAYUKI
IPC分类号： F41G3/00 , G01S7/32 , G01S13/56 , G01S13/66
摘要： PROBLEM TO BE SOLVED: To provide a radar device capable of extracting the characteristic quantity for kind discrimination on a bladed aircraft target by solving the problem of incapability of determining whether the number of blades is an even number or an odd number by folding back of a frequency distribution in the case of a low pulse repeating frequency because of disusing Doppler. SOLUTION: This device is equipped with a first threshold detector 1 for detecting flash by providing some first threshold in a reception signal, a second threshold detector 2 for detecting flash by providing a second threshold lower than the first threshold, a flash frequency determiner 3 for calculating flash detection frequencies of the first threshold detector and the second threshold detector, and a blade number evenness-oddness determiner 4 for comparing the flash frequencies corresponding to each threshold acquired by the flash frequency determiner, and determining that the number of blades of a rotor is an odd number when the frequency on the first threshold is a double of the frequency on the second threshold, and that the number of blades is an even number when both frequencies are equal.

96. 发明专利

JP2002204186A APPARATUS AND METHOD FOR ANALYZING FH COMMUNICATION SIGNAL 失效
公开(公告)号：JP2002204186A
公开(公告)日：2002-07-19
申请号：JP2000401785
申请日：2000-12-28
申请人： MITSUBISHI ELECTRIC CORP
发明人： MANIWA HISAKAZU , IWAMOTO MASAFUMI , KIRIMOTO TETSUO , KOBAYASHI MASAAKI , UEDA TOSHIHIKO
IPC分类号： H04B1/713 , H04B1/7143
摘要： PROBLEM TO BE SOLVED: To obtain a method and an apparatus for analyzing an FH communication signal having a high estimating accuracy capable of avoiding a riskiness for erroneously estimating a tone frequency even when a large noise exits in an output signal of a BPF. SOLUTION: The apparatus for analyzing the FH communication signal comprises the BPF 10 for passing only a signal of a preset frequency band, a detecting means 12 for measuring a strength of an output signal of the BPF 10, a detecting timing generating means 11 for setting timing for measuring by the means 12 to control the detecting means, an output signal strength system of each BPF 10 so far, an FH feature estimating means 20 for estimating an FH feature from the system of the estimated tone frequency so far, and a tone estimating means 21 for estimating the frequency used at present in the FH communication from the FH feature and the output signal strength of the BPF.

97. 发明专利

JP2001337158A TARGET DETECTOR 失效
公开(公告)号：JP2001337158A
公开(公告)日：2001-12-07
申请号：JP2000154229
申请日：2000-05-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAMEDA HIROSHI , IWAMOTO MASAFUMI , KIRIMOTO TETSUO , KOSUGE YOSHIO , OOKA SHUICHI
IPC分类号： G01S7/32 , G01S13/66
摘要： PROBLEM TO BE SOLVED: To provide a target detector which readily conducts a target extraction in a high-density environment by improving an error alarm probability for performing target detection with an improved detection probability. SOLUTION: This target detector is provided with a radar signal processing means 1 for inputting a received signal of a radar and outputting a video signal, a systematic error alarm ratio detecting means 2 for outputting a video signal exceeding a threshold as a detection signal, a threshold control means 3 calculating an error alarm probability from a target detection probability demanded by a tracking means 6 and controlling the threshold used in the systematic error alarm ratio detecting means 2, an attribute information extracting means 4 extracting Doppler information, signal intensity and the like from the detection signal outputted by the systematic error alarm ratio detecting means 2, an inter-scan correlating means 5 regarding a detection signal existing in a correlation gate M times among N samples in the detection signals outputted by the systematic error ratio detecting means 2 as a target signal, and the tracking means 6 for inputting the target signal and estimating motion characteristics, such as a position and a speed of a tracking target.

98. 发明专利

JP2001264435A RADAR DEVICE 失效
公开(公告)号：JP2001264435A
公开(公告)日：2001-09-26
申请号：JP2000078611
申请日：2000-03-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMAMOTO KAZUHIKO , IWAMOTO MASAFUMI , KIRIMOTO TETSUO
IPC分类号： G01S13/90 , G01S13/28
摘要： PROBLEM TO BE SOLVED: To provide a radar device capable of estimating a combined rotary motion and the like of a target and automatically expanding/contracting a radar image in matching the radar image and a dictionary image. SOLUTION: This device comprises means 1, 2 for estimating the inclination of an axis of the target and Doppler width on the radar image, a means 3 for restricting a cross range axial vector of the radar image based on a position relation of the target and a radar viewed from a target tracking result 507 and the inclination of the axis of the target on the radar image, a means 5 for obtaining a cross range length characteristic of actual dimension in the cross range direction of each candidate for the target from shape data 512 of each candidate for the target, a means 509 for estimating an aspect angle of the target from positions of the target and the radar device and the traveling direction of the target, a means 4 for determining a picture plane for the radar image from the results of means 2, 3, 5, a means 510 for calculating a distribution of a three-dimensional radar reflection cross section RCS of the candidate of the target from the shape data of each of the candidates for the target and the aspect angle of the target, a means 7 for producing an identification dictionary image for each candidate for the target from the distribution of RCS and the picture plane, and a means 506 for displaying the dictionary image together with the radar image 505.

99. 发明专利

JP2001153949A RADAR AND METHOD FOR REPRODUCING IMAGE 失效
公开(公告)号：JP2001153949A
公开(公告)日：2001-06-08
申请号：JP33303299
申请日：1999-11-24
申请人： MITSUBISHI ELECTRIC CORP
发明人： HASEGAWA HIDEKI , IWAMOTO MASAFUMI , KIRIMOTO TETSUO
IPC分类号： G01S13/89 , G06T1/00
摘要： PROBLEM TO BE SOLVED: To solve such problem that a long time is required for reproducing a radar image although the system error is confined within an allowable range because filter parameters ε, FL are determined without taking account of the correspondence between the allowable system error and the interpolation time when an interpolating section 5 executes interpolation of received signals. SOLUTION: Filter parameters ε, FL for minimizing the interpolation time are set within the allowable range of system error and received signals are interpolated using the filter parameters ε, FL.

100. 发明专利

JP2001147268A TARGET OBSERVING DEVICE AND METHOD 失效
公开(公告)号：JP2001147268A
公开(公告)日：2001-05-29
申请号：JP33182599
申请日：1999-11-22
申请人： MITSUBISHI ELECTRIC CORP
发明人： IWAMOTO MASAFUMI , KIRIMOTO TETSUO , SHIMURA SEIICHI
IPC分类号： G01S13/50 , G01S13/89
摘要： PROBLEM TO BE SOLVED: To solve problems such that information specifying changes in radar images with the passage of time is not obtained and that the moving direction and location of movement of a target 31 in a radar image can not be predicted. SOLUTION: By comparing a radar image outputted from an image reproducing means 45 with a radar image outputted from a delay means 46, the vector of movement of each reflection point in a radar image is found.

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