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1. 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.

2. 发明专利

JPH09230029A TEST DEVICE FOR SYNTHETIC APERTURE RADAR 失效
公开(公告)号：JPH09230029A
公开(公告)日：1997-09-05
申请号：JP3349996
申请日：1996-02-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： HIROTA YOKICHI , TANAKA HIROKAZU , HARA YOSHIHISA
IPC分类号： G01S7/40 , G01S13/90
摘要： PROBLEM TO BE SOLVED: To carry out the system comprehensive test of a synthetic aperture radar in a room (Near Field). SOLUTION: Input and output of a synthetic aperture radar 1 are equivalently made to be Far Field by an offset parabola of metallic face arranged between the synthetic aperture radar 1 and a primary radiator 2. In this way, by converting to Far Field, correct radar measurement can be carried out, without separating the distance between the synthetic aperture radar 1 and the primary radiator 2.

3. 发明专利

JP2565327B2 失效
公开(公告)号：JP2565327B2
公开(公告)日：1996-12-18
申请号：JP5076287
申请日：1987-03-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： HARA YOSHIHISA
IPC分类号： G01S13/90

4. 发明专利

JPS6326775A SIGNAL PROCESSOR 失效
公开(公告)号：JPS6326775A
公开(公告)日：1988-02-04
申请号：JP17111286
申请日：1986-07-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： HARA YOSHIHISA
IPC分类号： G01S13/90 , G06T1/00
摘要： PURPOSE:To shorten signal processing time by producing continuously addresses of a picture memory part by setting the range initial value for each azimuth line and controlling the change of the range position caused by each subsequent increase of the azimuth line with a 2-bit control signal. CONSTITUTION:An address control part 3 calculates the distance for each transmission to store the initial address of the range position in an address initial value register 11 and the address change caused in the range direction for each transmission in an address control data memory 9 respectively for each azimuth line. The address change of the range direction is shown in two bits of an address increment signal 7 and an address decrement signal 8 and sent to a memory address generating part 2. The part 2 produces the address value based on the output 6 of the register 11 and both signals 7 and 8 and gives an access to a picture memory 1.

5. 发明专利

JP2000266844A RADAR APPARATUS 失效
公开(公告)号：JP2000266844A
公开(公告)日：2000-09-29
申请号：JP7222499
申请日：1999-03-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： IWAMOTO MASAFUMI , KIRIMOTO TETSUO , HARA YOSHIHISA
IPC分类号： G01S13/89
摘要： PROBLEM TO BE SOLVED: To obtain a synthetic aperture radar as a radar apparatus for obtaining high-resolution images which restricts speckle noises in reproducing images and improves an efficiency of processing to reproduce images. SOLUTION: The radar apparatus loaded to a moving platform for obtaining high-resolution images of an earth surface or the like has a phase compensation means 1 for carrying out phase compensation corresponding to a change in distance between a transmitting receiving antenna and a target center due to the movement of the platform to received signals, a transform means 3 for transforming polar coordinate system to rectangular coordinate system to transform phase-compensated received signals to a rectangular coordinate system of a spatial frequency axis, an image reproduction means 7 for two- dimensionally inverse Fourier transforming each of outputs of the transform means for transforming polar coordinate system to rectangular coordinate system with respect to a rectangular coordinate axis and reproducing observation images, and a multi look means 9 for superposing a plurality of observation images having observation ranges shifted.

6. 发明专利

JP2000111642A TESTING DEVICE FOR SYNTHETIC APERTURE RADAR 失效
公开(公告)号：JP2000111642A
公开(公告)日：2000-04-21
申请号：JP28371798
申请日：1998-10-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： HARA YOSHIHISA
IPC分类号： G01R29/10 , G01S7/40 , G01S13/90
摘要： PROBLEM TO BE SOLVED: To realize stable testing without requiring a large space, by providing a timing adjustment circuit for adjusting delay of target signals and levels of reference frequency signals, and a frequency converting circuit for coverting their frequency into RF band frequency. SOLUTION: Pulse signals from a synthetic aperture radar 1 and reference frequency signals of the radar are inputted into a timing adjustment circuit 2 through a cable connection, and delay of target signals and levels of various reference frequency signals are amplified/adjusted. A frequency converting circuit 3 raises the frequency of output of the adjustment circuit 2 by mixing it with the reference frequency signals and generates RF band reference frequency signals while outputs them as target signals. A phase shifter 4 changes the phase shift value of the target signals, an attenuator 5 changes the amplitude values thereof, and an amplifier 6 amplifies them, and then they are directly fed to a front end of a receiving part of the synthetic aperture radar 1 through a cable connection.

7. 发明专利

JPS63243883A RADAR SIGNAL PROCESSOR 失效
公开(公告)号：JPS63243883A
公开(公告)日：1988-10-11
申请号：JP7941887
申请日：1987-03-31
申请人： MITSUBISHI ELECTRIC CORP
发明人： HARA YOSHIHISA
IPC分类号： G01P5/00 , G01S7/295 , G01S13/90
摘要： PURPOSE:To increase a processing speed by converting a received signal from analog to digital and then dividing it into plural frequency bands by digital filters, and lowering their rates to necessary data rates by data thinning out filters and inputting the signals to a memory. CONSTITUTION:A received signal which is reflected by the surface of the sea and received by a receiver is sampled and quantized by an A/D conversion part 1. Then the output digital signal of the conversion part 1 is divided into the four frequency bands by the 1st-4th digital filters 2-5. Then the outputs of the filters 2-5 are passed through 1st-4th data thinning out filters 4-9 so as to lower their data rate to the data rates matching with the respective band widths. Consequently, the signals of the respective bands which are lowered to the data rates are multiplexed and stored in the input memory 10. The data stored in the memory 10 is transferred, band by band, to a Doppler filter 11 to generate filter banks by Fourier transformation, thereby dividing an observation area. Thus, the processing speed is increased.

8. 发明专利

JPS61120986A Signal processor for synthetic aperture radar 失效
标题翻译：用于合成孔径雷达的信号处理器
公开(公告)号：JPS61120986A
公开(公告)日：1986-06-09
申请号：JP24414884
申请日：1984-11-19
申请人： Mitsubishi Electric Corp
发明人： HARA YOSHIHISA
IPC分类号： G01S13/89 , G01S13/75 , G01S13/76 , G01S13/79 , G01S13/90 , G06T1/00
摘要： PURPOSE: To reduce the data processing time, by adding a processor for vector computation and a memory for memorizing data to be processed therewith to the output of a host computer.
CONSTITUTION: A magnetic tape on which an input raw image data is recorded is applied to a magnetic tape reproducer 4 and once an output is produced to a magnetic disc unit 5, the raw image data is stored into a memory 3 through a host computer 1 and a processor 2. Under such a condition, the signal processing for a synthetic aperture radar is donne with the processor 2. Having all data for processing, the memory 3 allows the random accessing and data accessing can be done at the same time both in the range-wise and azimuth-wise processing by an address control. Thus, in addition to no need for corner turn processing, all image data are memorized into the memory 3 to enable a high- speed processing by continuously supplying data to processor 2 on a pipeline system.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了减少数据处理时间，通过添加用于向量计算的处理器和用于存储要处理的数据的存储器到主计算机的输出。构成：将记录了输入原始图像数据的磁带施加到磁带再现器4，一旦向磁盘单元5输出输出，原始图像数据通过主计算机1存储到存储器3中在这种情况下，合成孔径雷达的信号处理与处理器2不同。具有所有要处理的数据，存储器3允许随机访问和数据访问同时在通过地址控制的范围和方位处理。因此，除了不需要转角处理之外，所有图像数据都被存储到存储器3中，以通过在管线系统上连续向处理器2提供数据来实现高速处理。

9. 发明专利

JPS60147839A ARITHMETIC UNIT 失效
公开(公告)号：JPS60147839A
公开(公告)日：1985-08-03
申请号：JP384584
申请日：1984-01-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： HARA YOSHIHISA
IPC分类号： G06F7/00 , G06F17/14
摘要： PURPOSE:To reduce the capacity of an address generating memory and the hardware of an arithmetic section, by selecting the number of basic clocks necessary for making a butterfly arithmetic of fast Fourier transformation at the power of 2, and synchronizing the address generating circuit and arithmetic section. CONSTITUTION:The number of clocks is selected as, for instance, 2 =16, and an address generating circuit makes the following arithmetic for synchronizing to the power of 2 of basic clocks. Change in the low-order four bits of the output of a counter 5 synchronizes to a butterfly arithmetic and the remaining higher order bits perform the n-th butterfly arithmetic at present. On the other hand, since each data can be used for arithmetic once because of the nature of an FFT and operated results can be written in the same address of a memory, from which data are read out, it is sufficient to obtain a 2-bit decoded output to a 4-bit input signal and one bit is enough to a coefficient address. Therefore, it is sufficient that decoding is made by using outputs of 16 clocks so that the outputting timing of a decoder 9 coincides with the data inputting timing and coefficient outputting timing.

10. 发明专利

JPH06102348A RADAR DEVICE 失效
公开(公告)号：JPH06102348A
公开(公告)日：1994-04-15
申请号：JP24789592
申请日：1992-09-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： HARA YOSHIHISA
IPC分类号： G01S13/34 , G01S13/50 , G01S13/60 , G01S13/93
摘要： PURPOSE:To accurately monitor the existing conditions of one' own vehicle and the other obstacle in an on-vehicle radar. CONSTITUTION:The distance and the speed of plural targets are separated with an amplitude sorting circuit 10 and a distance and speed calculating circuit 11. Also, two beams are produced by a first beam former 8 and a second beam former 12, and a doppler frequency to the ground is measured with a Fourier transform device 13 and a detection circuit 14 for a maximums value. Thereby, the distance and the relative speed of plural targets (other vehicle or obstacle) not only can be measured but also the ground speed of one's own vehicle can be measured.

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