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1. 发明专利

JP2003215240A SYNTHETIC APERTURE RADAR AND IMAGE REPRODUCING METHOD 审中-公开
公开(公告)号：JP2003215240A
公开(公告)日：2003-07-30
申请号：JP2002020089
申请日：2002-01-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： HASEGAWA HIDEKI , IWAMOTO MASAFUMI , KIRIMOTO TETSUO , SHIBATA CHIAKI
IPC分类号： G01S13/90
摘要： PROBLEM TO BE SOLVED: To provide a synthetic aperture radar loaded on an aircraft or a moving platform for sanitation, capable of reducing phase compensation error in imaging of observed data for obtaining high resolution image of ground or sea surfaces and an image reproduction method therewith. SOLUTION: Average of amplitudes for every range bin is calculated, and a threshold is determined on the basis of the average amplitude in the range bin where the average becomes maximum. By using only the range bin having amplitude over the threshold, process is done with only the range bin with small estimation error, and so phase compensation error can be reduced. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2003194932A SYNTHETIC APERTURE RADAR APPARATUS AND IMAGE REPRODUCING METHOD FOR SYNTHETIC APERTURE RADAR 审中-公开
公开(公告)号：JP2003194932A
公开(公告)日：2003-07-09
申请号：JP2001397087
申请日：2001-12-27
申请人： MITSUBISHI ELECTRIC CORP
发明人： HASEGAWA HIDEKI , IWAMOTO MASAFUMI , KIRIMOTO TETSUO , SHIBATA CHIAKI
IPC分类号： G01S13/90
摘要： PROBLEM TO BE SOLVED: To obtain a synthetic aperture radar apparatus by which a differential value of an estimated value for a phase error is compensated and which can reduce a possibility that a phase compensation error is generated. SOLUTION: As a phase-compensation-amount correction means which is installed between a multiplication processing part 20 used to find the differential value of the estimated value for the phase error and an integration processing part 21 used to find the estimated value for the phase error and which monitors and corrects a phase compensation amount, a phase-error differential-value decision and 0-substitution part 28 which monitors an absolute value for the differential value of the estimated value for the phase error and which substitutes 0 as the differential value of the estimated value for the phase error to be output to the integration processing part when the absolute value exceeds a prescribed value is provided. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2002372582A Synthetic aperture radar device 审中-公开
标题翻译：合成孔径雷达装置
公开(公告)号：JP2002372582A
公开(公告)日：2002-12-26
申请号：JP2001181783
申请日：2001-06-15
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： HASEGAWA HIDEKI , IWAMOTO MASAFUMI , KIRIMOTO TETSUO , SHIBATA CHIAKI
IPC分类号： G01S13/90
摘要： PROBLEM TO BE SOLVED: To provide a synthetic aperture radar device capable of reproducing an mage without degrading resolution even in turning by allowing the changeover of an antenna control method according to the motion of a moving platform.
SOLUTION: This synthetic aperture radar device is provided with a transmitting and receiving antenna mounted on the moving platform; a motion sensor for measuring the moving direction of the moving platform; an antenna fixing control means for fixing the transmitting and receiving antenna in a specific direction to the moving platform; antenna stabilizing control means for controlling the transmitting and receiving antenna to point to specific azimuth regardless of the motion of the moving platform; a control method changeover means for changing over to move only one control means out of the antenna control means; a control method changeover determining means for determining the changeover of the control method on the basis of an angle defined by the pulse irradiation direction and the moving direction of the moving platform; and an image reproducing processing means for reproducing the image by processing the echo signal amplified by the wide band transmitting and receiving part.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种能够通过允许根据移动平台的运动来切换天线控制方法而能够再现法师而不降低分辨率的合成孔径雷达设备。解决方案：该合成孔径雷达装置设有安装在移动平台上的发射和接收天线; 用于测量移动平台的移动方向的运动传感器; 天线固定控制装置，用于将发射和接收天线沿特定方向固定到移动平台; 天线稳定控制装置，用于控制发射和接收天线指向特定方位角，而不管移动平台的运动如何; 控制方法切换装置，用于转换以仅从天线控制装置中移动一个控制装置; 控制方法切换确定装置，用于基于由脉冲照射方向和移动平台的移动方向限定的角度来确定控制方法的切换; 以及图像再现处理装置，用于通过处理由宽带发送和接收部分放大的回波信号来再现图像。

4. 发明专利

JP2002071799A SYNTHETIC APERTURE RADAR DEVICE AND IMAGE REPRODUCING METHOD 失效
公开(公告)号：JP2002071799A
公开(公告)日：2002-03-12
申请号：JP2000267585
申请日：2000-09-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： HASEGAWA HIDEKI , IWAMOTO MASAFUMI , KIRIMOTO TETSUO
IPC分类号： G01S13/90
摘要： PROBLEM TO BE SOLVED: To overcome the problem such that the phase compensation of images can not be speedily completed due to the large amount of computations for correlation commutations between two images when the resolution degradation of the images can be compensated for by performing the correlation computations between the two images by the amount of all the combinations of N-pieces of images by an all-image correlating part 7. SOLUTION: Combinations of images on which the correlation commutations are to be performed are determined from among the plurality of images. The correlation computations between the images are performed, and phase compensation is performed on the result of Fourier transformation according the result of the computations.

5. 发明专利

JP2001242244A SYNTHETIC APERTURE RADAR DEVICE AND IMAGE REPRODUCING METHOD THEREFOR 失效
公开(公告)号：JP2001242244A
公开(公告)日：2001-09-07
申请号：JP2000049302
申请日：2000-02-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： HASEGAWA HIDEKI , IWAMOTO MASAFUMI , KIRIMOTO TETSUO
IPC分类号： G01S13/90
摘要： PROBLEM TO BE SOLVED: To heighten accuracy in estimating the phase compensation quantity to obtain an image improved in resolution by suppressing the error of image correlation caused by speckle noise. SOLUTION: This synthetic aperture radar device is provided with a transmit-receive antenna 1; a wide-band transmit-receive part 2 amplifying signals collected by the transmit- receive antenna 1; an image reproducing processing part 3 for carrying out image reproducing processing, using an output signal from the wide-band transmit-receive part 2; an azimuth FFT part 4 performing the inverse Fourier transformation of an image in the proceeding direction of a platform; a spectrum dividing part 5 for dividing the Fourier transformed result of the image equally in a plurality of parts; an azimuth IFFT part 6 for performing the inverse Fourier transformation of the divided result; a picture element neighborhood averaging part 10 for performing the neighborhood averaging of the adjacent picture elements of the image obtained by inverse Fourier transformation; an image correlation part 7 for computing the correlation in all combinations of a plurality of images in the neighborhood averaged result of the picture elements; a phase compensating part 8 for computing the phase compensation quantity from the correlative result of the images to compensate the phase, and an image reproducing part 9 for reproducing the image from the phase compensated result.

6. 发明专利

JP2009052960A Radar system 有权
标题翻译：雷达系统
公开(公告)号：JP2009052960A
公开(公告)日：2009-03-12
申请号：JP2007218565
申请日：2007-08-24
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SUWA HIROSHI , IWAMOTO MASAFUMI , HASEGAWA HIDEKI
IPC分类号： G01S13/89 , G01S13/87
摘要： PROBLEM TO BE SOLVED: To provide a radar system which can generate a high-resolution image of a target even when the projected planes of a plurality of radar images do not agree with each other. SOLUTION: The radar system has: a plurality of radars which are placed at different positions to observe the target; a projected plane compensation means 19 for performing processing for allowing the projected planes of reception signal spectra obtained by the plurality of radars to agree with each other; a mutual coherency means 3 for performing processing for matching the phases of the reception signal spectra obtained by the plurality of radars; a band expansion means 4 for interpolating or extrapolating the reception signal spectra with the phases matched by the mutual coherency means in a range direction or cross-range direction to generate a continuous spectrum with the bandwidth expanded; and compression means 5, 6 for compressing the range and cross range of the continuous spectrum generated by the band expansion means, respectively. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：即使当多个雷达图像的投影平面彼此不一致时，也可以提供能够生成目标的高分辨率图像的雷达系统。解决方案：雷达系统具有：多个雷达，放置在不同位置以观察目标; 投影平面补偿装置19，用于执行用于允许由多个雷达获得的接收信号光谱的投影平面彼此一致的处理; 相互一致性装置3，用于执行用于匹配由多个雷达获得的接收信号频谱的相位的处理; 一个频带扩展装置4，用于在接收信号频谱内插或外推由相互一致性装置在范围方向或交叉范围方向上匹配的相位，以产生具有扩展频带的连续频谱; 以及用于压缩由带扩展装置产生的连续光谱的范围和交叉范围的压缩装置5,6。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2004198275A Synthetic aperture radar system, and image reproducing method 审中-公开
公开(公告)号：JP2004198275A
公开(公告)日：2004-07-15
申请号：JP2002367699
申请日：2002-12-19
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： HIRAO CHIE , HASEGAWA HIDEKI , IWAMOTO MASAFUMI
IPC分类号： G01S13/90
摘要： PROBLEM TO BE SOLVED: To add processing for compensating an error of an image reproducing parameter to image formation processing for an observation data, so as to enhance resolution of an image, in a synthetic aperture radar system mounted on a moving platform for an aircraft, a satellite or the like to provide a high-resolution image of a ground surface or a sea surface.
SOLUTION: A phase error estimated by an auto-focusing method is converted into the error of the image reproducing parameter, and image reproduction is repeatedly processed using the compensated image reproducing parameter. Worsening in resolution of the image caused by the error of the image reproducing parameter is thereby compensated to enhance the resolution of the image.
COPYRIGHT: (C)2004,JPO&NCIPI

8. 发明专利

JP2014235109A 合成開口レーダ装置有权
标题翻译：合成孔径雷达装置
公开(公告)号：JP2014235109A
公开(公告)日：2014-12-15
申请号：JP2013117723
申请日：2013-06-04
申请人：三菱電機株式会社 , Mitsubishi Electric Corp
发明人： IRIBE KOICHI , HASEGAWA HIDEKI , NAKANO YOSUKE
IPC分类号： G01S13/90
摘要：【課題】従来の合成開口レーダは、航空機や人工衛星等に搭載して移動しながら観測を行うことにより、大きなアレーアンテナと等価な信号を得ることで、角度方向を高分解能化する。このため、航空機や衛星等のプラットフォームに搭載する必要があり、高価な装置となっていた。また、従来の合成開口レーダは、地表面等の固定目標を画像化するものであるため、移動目標を画像化するとうまく結像しない課題があった。【解決手段】制御部4の制御により、アジマス方向に配列された送受信アンテナ部2の送受信を所定の順番で切替えることで、アジマス方向に移動させることなく従来の合成開口レーダと等価の信号を得る。【選択図】図1
摘要翻译：要解决的问题：为了解决例如在常规的合成孔径雷达中，它被安装在飞行器或卫星上并且在移动时进行观察的问题，从而可以将与大阵列天线获得的信号相当的信号然后通过高分辨率解决角度方向，因此孔径雷达必须安装在飞行器或卫星的平台上，因此它是昂贵的装置，并且常规的合成孔径雷达成像固定的目标，例如地面，使得移动目标的成像具有不能很好地进行成像的问题。解决方案：控制单元4控制以方向方向布置的发送和接收天线部分2的发送和接收以预定顺序因此，可以在不使合成孔径雷达在方位方向上移动的情况下获得与常规合成孔径雷达获得的信号相当的信号。

9. 发明专利

JP2009128019A Synthetic aperture radar image reproducing device, synthetic aperture radar image reproducing method and synthetic aperture radar image reproducing program 有权
标题翻译：合成孔径雷达图像再现装置，合成孔径雷达图像再现方法和合成孔径雷达图像再现程序
公开(公告)号：JP2009128019A
公开(公告)日：2009-06-11
申请号：JP2007299955
申请日：2007-11-20
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： HASEGAWA HIDEKI
IPC分类号： G01S13/90
摘要： PROBLEM TO BE SOLVED: To shorten a processing time of a back projection algorithm.
SOLUTION: A contribution data extracting unit extracts, from pulse compression data including information which contributes to reproduction of each point on a reproduced image, contribution data which contributes to formation of a reproduced image of picture elements included in an observation target area for each picture element every time when a data input unit 6 inputs the pulse compression data without waiting for all the pulse compression data to be input. A multiplication unit 11 multiples reference data formed based on shift information of a platform with the contribution data, and thereby forms multiplication data every time when the contribution data extracting unit extracts the contribution data. An addition unit 12 adds the multiplication data formed from the contribution data which contributes to formation of a reproduced image of the same area to reproduce an image for each area, and forms a reproduced image every time when the multiplication unit 11 forms the multiplication data.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：缩短反投影算法的处理时间。解决方案：贡献数据提取单元从包括有助于再现图像上的每个点的再现的信息的脉冲压缩数据中提取有助于形成包括在观察目标区域中的图像的再现图像的贡献数据，每次当数据输入单元6输入脉冲压缩数据而不等待输入所有脉冲压缩数据时，每个图像元素。乘法单元11对基于具有贡献数据的平台的移位信息形成的参考数据进行倍增，从而在每次贡献数据提取单元提取贡献数据时形成乘法数据。加法单元12将由有助于形成相同区域的再现图像的贡献数据形成的乘法数据相加以再现每个区域的图像，并且每当乘法单元11形成乘法数据时，形成再现图像。版权所有（C）2009，JPO＆INPIT

10. 发明专利

JP2005024311A Synthetic aperture radar device 有权
标题翻译：合成孔径雷达装置
公开(公告)号：JP2005024311A
公开(公告)日：2005-01-27
申请号：JP2003187773
申请日：2003-06-30
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： HASEGAWA HIDEKI , YAMAMOTO KAZUHIKO , IWAMOTO MASAFUMI , MORIMOTO YUJI
IPC分类号： G01S13/90
摘要： PROBLEM TO BE SOLVED: To enhance image resolution of an SAR against image deterioration due to the shaking of a platform mounted with the SAR.
SOLUTION: An SAR sensor 1 radiates a high-frequency pulse signal and receives its reflected signal to output a reception signal. A fluctuation sensor 2 outputs shake data on the position, velocity, and acceleration of the moving platform. An image size determining part 3 determines the image size of an SAR image reproduced at a time so that the phase error of the reception signal caused by the fluctuation of the moving platform relative to the center of the SAR image is equal to or less than a prescribed value on the periphery of the SAR image based on the fluctuation data outputted from the fluctuation sensor 2. An image reproduction processing part 4 receives the reception signal outputted from the SAR sensor 1 to reproduce the SAR image of the image size determined by the determining part 3.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提高SAR的图像分辨率，因为安装了SAR的平台的抖动导致的图像劣化。解决方案：SAR传感器1辐射高频脉冲信号并接收其反射信号以输出接收信号。波动传感器2输出关于移动平台的位置，速度和加速度的抖动数据。图像尺寸确定部分3确定一次再现的SAR图像的图像尺寸，使得由移动平台相对于SAR图像的中心的波动引起的接收信号的相位误差等于或小于基于从波动传感器2输出的波动数据，SAR图像周围的规定值。图像再现处理部分4接收从SAR传感器1输出的接收信号，以再现由确定的图像尺寸确定的图像尺寸的SAR图像第三部分。版权所有（C）2005，JPO＆NCIPI

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