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公开(公告)号：US20170322300A1
公开(公告)日：2017-11-09
申请号：US15525679
申请日：2014-12-15
发明人： Satoshi KAGEME , Nobuhiro SUZUKI
CPC分类号： G01S13/582 , G01S7/285 , G01S13/42 , G01S13/72 , G01S2013/0263
摘要： A configuration is provided with: a local oscillator 3 which generates M local oscillation signals Lm(t) whose frequencies differ from one another by an integral multiple of an angular frequency ω; receiver devices 4-m each converting the frequency of a received signal Rxm(t) of one antenna element 2-m using one local oscillation signal Lm(t) generated by the local oscillator 3, thereby generating a received video signal Vm(t) having an antenna element number m; an adder 5 which adds the received video signals V1(t) to VM(t) generated by the receiver devices 4-1 to 4-M, and outputs a received video signal Vsum(t) after addition; and an A/D converter 6 which A/D-converts the received video signal Vsum(t) outputted from the adder 5, thereby to generate a received video signal V(n) which is a digital signal.
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公开(公告)号：US20200348407A1
公开(公告)日：2020-11-05
申请号：US16934947
申请日：2020-07-21
发明人： Kazuaki MANIWA , Satoshi KAGEME , Teruyuki HARA
摘要： A radar device is configured in such a manner that each of transmission radars uses, as the amount of phase modulation, a value determined from either one of a positive integer value that is less than or equal to a result of division obtained by dividing the number of hits of a transmission RF signal by the number of the transmission radars and a value of 0; a hit number h of the transmission RF signal; and the number of hits.
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公开(公告)号：US20190339374A1
公开(公告)日：2019-11-07
申请号：US16074362
申请日：2016-02-29
发明人： Satoshi KAGEME , Teruyuki Hara
摘要： A frequency domain transforming unit (231-1) performs a transform into a frequency domain in such a way that a Doppler velocity bin is the same for each of different transmission frequencies. A correlation unit (232-1) generates signals based on a velocity and a range after correlation, the signals being separate for each of the transmission frequencies. An integrating unit (233-1) generates band-synthesized signals based on a velocity and a range after correlation. A target candidate detecting unit (241) performs detection of a target candidate on output signals of the integrating unit (233-1) on the basis of signal strength. A target's relative-velocity/relative-range/arrival-angle calculating unit (242) calculates a relative velocity, a relative range, and an arrival angle of the target candidate.
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公开(公告)号：US20210190903A1
公开(公告)日：2021-06-24
申请号：US17176473
申请日：2021-02-16
发明人： Satoshi KAGEME
摘要： A radar apparatus includes: a PRI control unit for setting a plurality of pairs of a pulse repetition interval longer than a reference interval and a pulse repetition interval shorter than the reference interval; a signal generation circuit for generating a plurality of transmission pulse signals on the basis of the plurality of pairs of pulse repetition intervals; a transmission and reception unit for sending out the plurality of transmission pulse signals to external space and receiving a plurality of reflected wave signals from the external space; a receiving circuit for generating a plurality of received signals by sampling each of the plurality of reflected wave signals; a signal conversion unit for generating a plurality of frequency domain signals by performing domain conversion processing from a time domain to a frequency domain on the plurality of received signals; and a target detection unit for detecting a target candidate on the basis of the plurality of frequency domain signals.
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公开(公告)号：US20200182994A1
公开(公告)日：2020-06-11
申请号：US16781234
申请日：2020-02-04
发明人： Satoshi KAGEME , Kazuaki MANIWA , Teruyuki HARA
摘要： A range-direction frequency domain converting unit (231-1) converts reception video signals into signals in a range direction frequency. A hit-direction frequency domain converting unit (232-1) converts the signals in the range direction frequency into signals based on the velocity and the range direction frequency so that the target Doppler frequency belongs to the same velocity bin number independently of variations in frequencies of transmission signals. A correlation unit (233-1) generates signals based on the velocity separated for each of the transmission frequencies and a range after correlation. An integration unit (234-1) generates band-synthesized signals based on the velocity and a range after correlation. A candidate target detecting unit (241) detects candidate targets based on the signal intensity from the output signals of the integration unit (233-1). A target relative velocity/relative range/arrival angle calculating unit (242) calculates the relative velocity, the relative range, and the arrival angle of the candidate targets.
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公开(公告)号：US20230350009A1
公开(公告)日：2023-11-02
申请号：US18219271
申请日：2023-07-07
发明人： Satoshi KAGEME
CPC分类号： G01S7/2926 , G01S7/2883
摘要： A signal processor is configured to include: a high-order phase linearizing unit to acquire an input reception signal of a reflected wave from a target to be detected, and raise a sampling number of the input reception signal to power by using an order of a high-order component included in the input reception signal as a power index; and a high-order coherent integrating unit to perform coherent integration of the reception signal having the sampling number raised to the power by the high-order phase linearizing unit.
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公开(公告)号：US20230204751A1
公开(公告)日：2023-06-29
申请号：US18178340
申请日：2023-03-03
发明人： Yu SHIMIZU , Satoshi KAGEME , Takayuki KITAMURA , Kei SUWA
IPC分类号： G01S13/52 , G01S13/931 , G01S7/03 , G01S13/42 , G01S13/58
CPC分类号： G01S13/52 , G01S13/931 , G01S7/03 , G01S13/42 , G01S13/589 , G01S2013/932
摘要： An object detection device includes processing circuitry configured to acquire wave data; acquire the moving velocity of a radar device; estimate a relative distance between the radar device and a target, angle of incidence of a reflection signal from the target, and a first relative velocity between the radar device and the target, by using the wave data; and estimate a second relative velocity between the radar device and the target in a case where the target is a static object, on the basis of the acquired moving velocity and the relative distance and the angle of incidence, and determine whether the target is a static object by comparing the first relative velocity and the second relative velocity.
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公开(公告)号：US20210356559A1
公开(公告)日：2021-11-18
申请号：US17385311
申请日：2021-07-26
发明人： Satoshi KAGEME
摘要： A first module generates a first reception signal from a reflection RF signal of a transmission RF signal using a first local oscillation signal, a second module generates a second reception signal from the reflection RF signal using a second local oscillation signal synchronized with the first local oscillation signal, and a first signal processor calculates the angle of a target using a signal obtained by coherent integration based on the first reception signal and second reception signal.
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公开(公告)号：US20210325524A1
公开(公告)日：2021-10-21
申请号：US17360201
申请日：2021-06-28
发明人： Yu SHIMIZU , Satoshi KAGEME , Kei SUWA
摘要： An angle measuring device includes: a signal extracting unit for extracting a signal that includes a first reflection wave and does not include a second reflection wave as a first demodulated signal and a signal that includes the second reflection wave and does not include the first reflection wave as a second demodulated signal from reception signals output from one or more reception antennas among a plurality of reception antennas; an elevation calculating unit for calculating an elevation of a target by performing monopulse angle measurement using a sum signal of the first demodulated signal and the second demodulated signal and a difference signal between the first demodulated signal and the second demodulated signal; and an azimuth calculating unit for calculating an azimuth of the target using reception signals output from the plurality of reception antennas.
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公开(公告)号：US20200011983A1
公开(公告)日：2020-01-09
申请号：US16489548
申请日：2017-03-31
发明人： Satoshi KAGEME , Teruyuki HARA , Masanori ITO
摘要： Transmission radars (1-nTX) (nTX=1, 2, . . . , NTX) generate mutually different modulation codes Code(nTX, h) by cyclically shifting the same code sequence by mutually different cyclic shift amounts Δτ(nTX), and generate mutually different transmission RF signals (4-nTX) using the mutually different modulation codes Code(nTX, h). As a result, the number of transmission radars 1-nTX can be made larger, and target detection accuracy can be made higher than in a case where orthogonal codes are used as mutually different modulation codes.
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