专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2000105275A RADAR SIGNAL PROCESSOR 失效
公开(公告)号：JP2000105275A
公开(公告)日：2000-04-11
申请号：JP27484998
申请日：1998-09-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIBATA CHIAKI
IPC分类号： G01S13/90
摘要： PROBLEM TO BE SOLVED: To provide a radar signal processor for conducting high accuracy unlapping processing suitable for image data in a short processing time. SOLUTION: This processor is formed by adding to an ordinary radar signal processor, a select signal 8, a selector part 9 for selecting systems of a second unlapping processing part 27 a least square system part 25, a coherence weighted least square system part 10, a coherence threshold weighted least square system part 12, a residue weighted least square system part 13, a branch cut weighted least square system part 15, a branch cut system part 26, and the second unlapping processing part 27 for processing phase integration by one of the above six kinds of systems.

2. 发明专利

JP2005127774A Radar system 审中-公开
标题翻译：雷达系统
公开(公告)号：JP2005127774A
公开(公告)日：2005-05-19
申请号：JP2003361759
申请日：2003-10-22
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SHIBATA CHIAKI
IPC分类号： G01S13/90
摘要： PROBLEM TO BE SOLVED: To prevent range ambiguity from appearing as a false image by improving the range S/A in a bad case of range S/A, by determining PRF by use of observed positional information, though a conventional radar system suffers ambiguity because of the restriction of PRF, or a range gate in the range direction, especially, in the case that the sea area near the land area is observed with a large off-nadia angle, and the range ambiguity appears as a false image.
SOLUTION: The radar system comprises a signal generation part constituting a regular radar system, a transmitter 2, a transmitter/receiver switching part 3, an antenna part, a receiver part, an A/D converter part 6, a parameter operation part 9, a timing control part 10, a range S/A estimation part 11, and a first PRF determination part 12.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了通过在范围S / A的不良情况下改善范围S / A来通过使用观察到的位置信息来确定PRF来防止范围模糊性出现为假图像，尽管常规雷达系统由于PRF的限制或范围门限在范围方向上，特别是在以较大的脱落角度观察到陆地区域附近的海域的情况下，模糊性受到歧义，并且范围模糊度表现为假图像。解决方案：雷达系统包括构成常规雷达系统的信号发生部分，发射机2，发射机/接收机切换部分3，天线部分，接收机部分，A / D转换器部分6，参数操作部分9，定时控制部分10，范围S / A估计部分11和第一PRF确定部分12.版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2003130950A RADAR SIGNAL PROCESSOR AND METHOD 审中-公开
公开(公告)号：JP2003130950A
公开(公告)日：2003-05-08
申请号：JP2001327187
申请日：2001-10-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIBATA CHIAKI
IPC分类号： G01S13/90 , G01S7/32
摘要： PROBLEM TO BE SOLVED: To solve the problem that an S/N ratio becomes bad and the estimate accuracy of a phase error is deteriorated when there are many isolated points or there are no projected isolated points and a receiving level is weak as a whole in a conventional synthetic aperture radar signal processor. SOLUTION: A plurality of isolated points are extracted from a processed SAR regenerated image and, after zero filling processing is applied to all of the extracted isolated points, the phase error related to the isolated points is calculated and a phase is compensated using the phase error highest in frequency distribution.

4. 发明专利

JP2003090880A SYNTHETIC APERTURE RADAR DEVICE AND IMAGE REGENERATION METHOD IN SYNTHETIC APERTURE RADAR DEVICE 审中-公开
公开(公告)号：JP2003090880A
公开(公告)日：2003-03-28
申请号：JP2001284923
申请日：2001-09-19
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 device reduced in operation quantity by executing range and phase compensation divisionally on a special frequency axis and on a range axis to reduce the number of the following range directional processing points. SOLUTION: This synthetic aperture radar device comprises a range fast Fourier transform (FFT) part 6 for performing FFT of the output of a signal receiving part 5, a reference signal multiplication part 7 for multiplying the output of the FFT part 6 by a high frequency pulse signal from a signal transmission part, a range inverse FFT (IFFT) part 11 for performing IFFT of the output of 7, a signal cutout part 12 for cutting out the output of the range IFFT part in a range direction according to the relative change quantity of the distance to an observation central position, a range FFT part 13 for performing FFT of the output of 12, a range and phase compensation processing part 14 for compensating the change quantity of the residual uncompensated range in this part so that the phase of the echo from the observation central position is a fixed value, a signal interpolation part 9 for arranging the output of 12 on polar coordinates and interpolating a signal on rectangular coordinates thereto, and a two-dimensional IFFT part 10 for performing two-dimensional IFFT of the output of 9 and outputting a two-dimensional high resolution image.

5. 发明专利

JP2002372581A 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：JP2002372581A
公开(公告)日：2002-12-26
申请号：JP2001181776
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 reproduce an image without degrading resolution even in turning while reducing the cost of an antenna control part.
SOLUTION: This synthetic aperture radar device is provided with a transmitting and receiving antenna for irradiating a target with a high frequency pulse signal and receiving an echo signal reflected from the target; a wide band transmitting and receiving means for generating the high frequency pulse signal radiated from the transmitting and receiving antenna and amplifying the received echo signal; a motion sensor for measuring position information that indicates the position of a moving platform; an antenna fixing means for fixing the transmitting and receiving antenna in a specific direction to the moving platform and outputting pulse irradiation direction information; and an image reproducing processing means for processing the echo signal amplified by the wide band transmitting and receiving part, to perform image reproducing processing of the target in consideration of Doppler frequency in an orthogonal direction to the high frequency pulse.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：即使在降低天线控制部件的成本的同时，也不会降低分辨率来再现图像。解决方案：该合成孔径雷达装置设有发射和接收天线，用于以高频脉冲信号照射目标，并接收从目标反射的回波信号; 宽带发送和接收装置，用于产生从发射和接收天线辐射的高频脉冲信号，并放大所接收的回波信号; 用于测量表示移动平台的位置的位置信息的运动传感器; 天线固定装置，用于将发送和接收天线沿特定方向固定到移动平台并输出脉冲照射方向信息; 以及图像再现处理装置，用于处理由宽带发送和接收部分放大的回波信号，以便考虑到与高频脉冲正交的方向的多普勒频率来执行目标的图像再现处理。

6. 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

7. 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

8. 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。

9. 发明专利

JP2001194455A RADAR SIGNAL PROCESSOR 失效
公开(公告)号：JP2001194455A
公开(公告)日：2001-07-19
申请号：JP2000005654
申请日：2000-01-14
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIBATA CHIAKI
IPC分类号： G01S13/90
摘要： PROBLEM TO BE SOLVED: To obtain a signal processor which can obtain a high-resolution image by extracting only an imaging indication position, when a plurality of targets exist. SOLUTION: First, all data are cut out at a data cutting-out part, and range addition is performed conforming to resolution at a range addition part. A phase compensating part performs phase compensation by using set resolution and vibrating data. An azimuth compression part performs processing by using the set resolution and the vibrating data. A second display part performs log transformation of output data of a detection part and displays the results. Concerning a target confirmed by the second display part, imaging indication of high resolution is performed, and a target position and resolution are outputted to a parameter operating part, which operates parameter, such as the number of range bins and the number of pulses from the target position, the resolution, the vibrating data and a target size as the output of the target detecting part.

10. 发明专利

JP2004157048A Radar installation with synthetic aperture 审中-公开
标题翻译：雷达安装与合成孔径
公开(公告)号：JP2004157048A
公开(公告)日：2004-06-03
申请号：JP2002324224
申请日：2002-11-07
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： HASEGAWA HIDEKI , YAMAMOTO KAZUHIKO , IWAMOTO MASAFUMI , SHIBATA CHIAKI
IPC分类号： G01S13/90
摘要： PROBLEM TO BE SOLVED: To provide a radar installation with a synthetic aperture for estimating phase error of an SAR image by always using the same auto focusing method regardless of an observational state of the SAR (Synthetic Aperture Radar) sensor or a state of the SAR image.
SOLUTION: The auto focus method is constituted so that it is selected to be used for estimating the phase error corresponding to the state of the SAR image 4 by monitoring the SAR image 4 reproduced by an image reproducing processing part 3.
COPYRIGHT: (C)2004,JPO

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式