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1. 发明专利

JP2004191053A Synthetic aperture radar device and numerical altitude model creation method 有权
公开(公告)号：JP2004191053A
公开(公告)日：2004-07-08
申请号：JP2002355409
申请日：2002-12-06
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： ONO CHIKAKO , HORIUCHI KENJI
IPC分类号： G06T1/00 , G01S13/90 , G06T5/00
摘要： PROBLEM TO BE SOLVED: To provide a synthetic aperture radar device and a numerical altitude model creation method capable of calculating efficient and highly accurate numerical altitude model by detecting a phase noise to an interferogram and by reducing the phase noise by using wavelet transformation when the phase noise is larger than a threshold. SOLUTION: This device is equipped with a means for performing pulse transmission to an observation object, allowing acquired two SAR image data to interfere each other, and generating re-sample data wherein the interference becomes maximum, a means for calculating also the phase difference between either of the two SAR image data and the re-sample data and removing a plane phase to thereby create the interferogram, a means for detecting the phase noise of the interferogram and performing the wavelet transformation to thereby remove the phase noise, a means for developing a phase convoluted in 0-2π by the interferogram into an absolute phase, a means for converting to a high degree the absolute phase as an output from a phase unwrap means, and a means for correcting fore-shortening wherein a projection on the ground seems to fall down into a near range and calculating the numerical altitude model. COPYRIGHT: (C)2004,JPO&NCIPI

2. 发明专利

JPH11248828A RADAR APPARATUS 失效
公开(公告)号：JPH11248828A
公开(公告)日：1999-09-17
申请号：JP4676698
申请日：1998-02-27
申请人： MITSUBISHI ELECTRIC CORP
发明人： ONO CHIKAKO
IPC分类号： G01S13/34 , G01S13/89
摘要： PROBLEM TO BE SOLVED: To enable practical recognition of a runway by sharpening and finely resolving beams with the use of millimeter waves so as to form an image of the runway and storing data obtained by scanning the beams into a signal- processing part. SOLUTION: A signal transmitted from a transmission part 4 is switched by a circulator 3 to be sent out from an aerial 1 scanned by an aerial-rotating mechanism 2. A reflecting signal from a runway is received by the aerial 1 and switched by the circulator 3 to be received and input to a reception part 5. A distance to the runway is detected by a distance calculation circuit 6 in a signal-processing part 8. The distance data obtained by scanning the aerial is stored in a memory 7, thereby enabling mapping in a range direction. Since the beams are scanned and data are stored in the memory in the signal- processing part thereby forming a high-resolution image of the runway, the runway can be recognized practically.

3. 发明专利

JPH10246779A SYNTHETIC APERTURE RADAR EQUIPMENT 失效
公开(公告)号：JPH10246779A
公开(公告)日：1998-09-14
申请号：JP5027097
申请日：1997-03-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： ONO CHIKAKO , EMA KOUICHI , HARA YOSHIHISA
IPC分类号： G01S7/28 , G01S7/40 , G01S13/90
摘要： PROBLEM TO BE SOLVED: To form a most suitable antenna pattern by providing the specific number of monitor antennas on a satellite because of calculating a deformation amount between the even number of antenna panels. SOLUTION: A signal generated by a signal generator 4 is transmitted and received to a transmitting and receiving module 2 via a transmitter 3 as a transmitting signal 10. For instance, a radio wave transmitted from an antenna 1 composed of four panels is received by five monitor antennas 7 mounted on a satellite. A receiving signal 11 from the antenna 7 is input to a receiver 5, and A/D converted by a data processing part 6 to be transmitted to a control part 8. The part 8 determines five independent parameters of amplitude, a phase, deformation on an X-axis, deformation on a Y-axis and deformation on a Z-axis of each transmitting and receiving module by using the five antennas 7 and performing measurement five times. A setting phase is calculated in consideration to the calculated amplitude, phase, deformation on the X-axis, deformation on the Y-axis and deformation on the Z-axis of each transmitting and receiving module, transmitted to the transmitting and receiving module 2 via an interface 9, and a proper antenna pattern is formed.

4. 发明专利

JPH085395A NAVIGATING APPARATUS 失效
公开(公告)号：JPH085395A
公开(公告)日：1996-01-12
申请号：JP13456694
申请日：1994-06-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： SUGANUMA SEIJI , ONO CHIKAKO
IPC分类号： G01C21/16 , B64D43/00 , G01C21/20 , G01S7/22 , G01S13/44 , G08G5/00
摘要： PURPOSE:To obtain a navigating apparatus which can accurately detect an aircraft's own position. CONSTITUTION:An altitude calculator 7 periodically inputs the pilot's own aircraft's absolute position and terrain clearance obtained by an inertial navigator l and a radio altimeter 6, calculates its height, and records the height of a spot where the pilot's own aircraft passes in a flight pass recorder 10. A matching processor 9 forms a window to become reference data from the height of the own aircraft's passing spot calculated by the recorder 10 and the height of the previous spot calculated by a radar 11, and matches it to the map information of a digital map 8, thereby detecting the pilot's own aircraft's position. This aircraft's position the navigation, who controls an aircraft's body by an aircraft body controller 5.

5. 发明专利

JP2001194456A COMPOSITE APERTURE RADAR 失效
公开(公告)号：JP2001194456A
公开(公告)日：2001-07-19
申请号：JP2000005656
申请日：2000-01-14
申请人： MITSUBISHI ELECTRIC CORP
发明人： ONO CHIKAKO
IPC分类号： G01S13/90
摘要： PROBLEM TO BE SOLVED: To obtain optimum point image response and a high-resolution images by compensating the vibration part of a plane, using the latest velocity data of an inertial navigation system, in a composite aperture radar system. SOLUTION: A signal for compensating plane vibration is formed, by using the latest velocity data of the inertial navigation system which are updated immediately prior to each transmitting of pulse. By multiplying the signal to a receiving signal, the vibration component of the plane is eliminated, and high-resolution imaging is made possible.

6. 发明专利

JP2002181930A SYNTHETIC APERTURE RADAR APPARATUS AND DETECTION METHOD FOR TARGET SCATTERING POINT 失效
公开(公告)号：JP2002181930A
公开(公告)日：2002-06-26
申请号：JP2000383664
申请日：2000-12-18
申请人： MITSUBISHI ELECTRIC CORP
发明人： ONO CHIKAKO , HORIUCHI KENJI
IPC分类号： G01S13/90 , G01S7/32 , G01S13/26
摘要： PROBLEM TO BE SOLVED: To obtain a synthetic aperture radar apparatus by which a target scattering point can be detected without limiting in band a received signal observed at the change amount of the carrier frequency of pulses. SOLUTION: The synthetic aperture radar apparatus is provided with a correlation-matrix calculation means which calculates the correlation matrix of frequency data, a moving-average calculation means which constitutes minor matrixes from a part of the correlation matrix and which calculates an average correlation matrix on the basis of the moving average of the minor matrixes, an eigenvalue analytical means which analyzes the eigenvalue of the average correlation matrix so as to fine a minimum eigenvalue, a likelihood calculation means which calculates a likelihood with reference to a combination of ranges of the target scattering point, a range estimation means which detects the minimum calculated value of the likelihood and which estimates the range of the target scattering point and a superresolution processing means composed of a reflection-strength estimation means which estimates the reflection strength of the target scattering point by using the estimated value of the range.

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