-
公开(公告)号：US20170242116A1
公开(公告)日：2017-08-24
申请号：US15431508
申请日：2017-02-13
发明人： TAKAAKI KISHIGAMI
CPC分类号： G01S13/581 , G01S7/2925 , G01S13/284 , G01S13/931 , G01S2007/2883 , G01S2007/2886
摘要： A radar apparatus includes a radar transmitter and a radar receiver. The radar receiver includes sampling circuitry, correlation calculation circuitry, a plurality of adder circuitry, a plurality of Doppler frequency analysis circuitry and Doppler frequency correction circuitry. The Doppler frequency correction circuitry, which in operation, (i) determines whether or not a folding in a Doppler frequency included in a reflected wave signal is present according to an amplitude difference or phase difference between two of peak spectra of results of analyses performed by the plurality of Doppler frequency analysis circuitry, and (ii) makes a correction to the Doppler frequency included in a reflected wave signal on the basis of the results of the analyses in a case it is determined that the folding is present.
-
公开(公告)号：US20150212197A1
公开(公告)日：2015-07-30
申请号：US14603053
申请日：2015-01-22
IPC分类号： G01S7/34
摘要： A radar device is provided with: a transmitter that transmits a high-frequency radar transmission signal from a transmission antenna; a controller that controls execution or stopping of transmission of the radar transmission signal; a receiver that amplifies a thermal noise signal inputted from reception antenna by using an initial gain value and quantize the amplified thermal noise signal, while the transmission of the radar transmission signal is stopped; and a gain controller that adjusts the prescribed gain value to a gain value suitable for dithering of the thermal noise signal, based on the quantized thermal noise signal.
摘要翻译： 一种雷达装置具有：从发送天线发送高频雷达发射信号的发射机; 控制雷达传输信号的执行或停止发送的控制器; 在雷达传输信号的传输停止的同时，通过使用初始增益值放大从接收天线输入的热噪声信号并量化放大的热噪声信号的接收机; 以及增益控制器，其基于量化的热噪声信号将规定的增益值调整到适合于热噪声信号的抖动的增益值。
-
公开(公告)号：US20180088224A1
公开(公告)日：2018-03-29
申请号：US15703788
申请日：2017-09-13
发明人： TAKAAKI KISHIGAMI
CPC分类号： G01S13/34 , G01S7/02 , G01S7/28 , G01S7/282 , G01S7/285 , G01S13/288 , G01S13/42 , G01S13/46 , G01S13/931 , H01Q3/26 , H01Q21/06 , H01Q21/08 , H04B7/10
摘要： A radar apparatus includes: a radar transmitter that transmits a plurality of radar signals while switching among a plurality of transmitting subarrays; and a radar receiver that receives reflected-wave signals produced by the plurality of radar signals being reflected by a target, the plurality of radar signals being transmitted from the respective transmitting subarrays. In the radar apparatus, each of the plurality of transmitting subarrays includes a plurality of transmitting antennas, and adjacent ones of the plurality of transmitting subarrays share at least one of the plurality of transmitting antennas with each other.
-
公开(公告)号：US20170276769A1
公开(公告)日：2017-09-28
申请号：US15455948
申请日：2017-03-10
发明人： TAKAAKI KISHIGAMI
IPC分类号： G01S7/282
CPC分类号： G01S7/282 , G01S13/26 , G01S13/284 , G01S13/325 , G01S13/931
摘要： A radar apparatus includes: a radar transmission signal generator, which in operation, outputs a plurality of radar signals; a switching controller, which in operation, switches among plurality of transmitting antennas in sequence in a determined order to every one radar signal transmission period; and a radio transmitter, which in operation, transmits one radar signal every one radar signal transmission period through a allocated transmitting antenna to which switching has been made. A plurality of transmission timings at which the allocated transmitting antennas to which switching have been made transmit each of the plurality of radar signals within a determined period have identical time differences from a reference timing within the determined period.
-
公开(公告)号：US20170212213A1
公开(公告)日：2017-07-27
申请号：US15195600
申请日：2016-06-28
发明人： TAKAAKI KISHIGAMI
CPC分类号： G01S7/282 , G01S7/023 , G01S7/03 , G01S13/04 , G01S13/22 , G01S13/26 , G01S13/284 , G01S13/325 , G01S13/931
摘要： A radar device includes: radar transmitting circuitry which, in operation, generates Nt radar signals by modulating Nt transmission code sequences and transmits the radar signals via Nt transmission antennas, Nt being more than 1; and radar receiving circuitry which, in operation, receives reflection wave signals via Nr reception antennas and performs Doppler frequency analysis, Nr being more than 1. The radar transmitting circuitry stores a predetermined pulse sequence and Nt or more orthogonal code sequences, second half elements of the Nt or more orthogonal code sequences are arranged in an order reverse to first half elements of the Nt or more orthogonal code sequences and generates each of the Nt transmission code sequences by multiplying elements of the predetermined pulse sequence by elements of the Nt or more orthogonal code sequences different from each other.
-
公开(公告)号：US20230314555A1
公开(公告)日：2023-10-05
申请号：US17081248
申请日：2020-10-27
发明人： TAKAAKI KISHIGAMI , NAOYA YOSOKU
CPC分类号： G01S7/023 , G01S7/0234 , G01S13/42 , G01S13/4463 , H01Q21/08 , G01S7/352
摘要： A radar transmitter transmits a radar signal through a transmitting array antenna at a predetermined transmission period, and a radar receiver receives a reflected wave signal which is the radar signal reflected by a target through a receiving array antenna. A transmitting array antenna and a receiving array antenna each include multiple subarray elements, the subarray elements in the transmitting array antenna and the receiving array antenna are linearly arranged in a first direction, each subarray element includes multiple antenna elements, the subarray element has a dimension larger than a predetermined antenna element spacing in the first direction, and an absolute value of a difference between a subarray element spacing of the transmitting array antenna and a subarray element spacing of the receiving array antenna is equal to the predetermined antenna element spacing.
-
公开(公告)号：US20200251832A1
公开(公告)日：2020-08-06
申请号：US16855710
申请日：2020-04-22
发明人： TAKAAKI KISHIGAMI , NAOYA YOSOKU
摘要： A radar transmitter transmits a radar signal through a transmitting array antenna at a predetermined transmission period, and a radar receiver receives a reflected wave signal which is the radar signal reflected by a target through a receiving array antenna. A transmitting array antenna and a receiving array antenna each include multiple subarray elements, the subarray elements in the transmitting array antenna and the receiving array antenna are linearly arranged in a first direction, each subarray element includes multiple antenna elements, the subarray element has a dimension larger than a predetermined antenna element spacing in the first direction, and an absolute value of a difference between a subarray element spacing of the transmitting array antenna and a subarray element spacing of the receiving array antenna is equal to the predetermined antenna element spacing.
-
公开(公告)号：US20200044361A1
公开(公告)日：2020-02-06
申请号：US16596206
申请日：2019-10-08
发明人： TAKAAKI KISHIGAMI , NAOYA YOSOKU
摘要： A radar transmitter transmits a radar signal through a transmitting array antenna at a predetermined transmission period, and a radar receiver receives a reflected wave signal which is the radar signal reflected by a target through a receiving array antenna. A transmitting array antenna and a receiving array antenna each include multiple subarray elements, the subarray elements in the transmitting array antenna and the receiving array antenna are linearly arranged in a first direction, each subarray element includes multiple antenna elements, the subarray element has a dimension larger than a predetermined antenna element spacing in the first direction, and an absolute value of a difference between a subarray element spacing of the transmitting array antenna and a subarray element spacing of the receiving array antenna is equal to the predetermined antenna element spacing.
-
公开(公告)号：US20160259042A1
公开(公告)日：2016-09-08
申请号：US15045338
申请日：2016-02-17
发明人： TAKAAKI KISHIGAMI , NORIAKI TAKEDA
IPC分类号： G01S13/28
CPC分类号： G01S13/284 , G01S7/038 , G01S7/288 , G01S13/106 , G01S13/288 , G01S2007/2886
摘要： A radar apparatus includes: a transmitter which, in operation, transmits, as radar transmission signals, code sequences including a plurality of complementary codes having a code length L in each transmission period; a receiver which, in operation, receives one or more reflected waves including the radar transmission signals reflected by an object and are analog signals; an A/D converter which, in operation, converts the one or more reflected signals into digital signals, which are discrete samples; and a calculator which, in operation, performs a first calculation of correlation between the discrete samples and the code sequence transmitted by the transmitter and a second calculation of correlation between the discrete samples and a partial code sequence obtained by extracting a code length L−Q (L>Q≧2) from a tail end of the code sequence transmitted by the transmitter, and that outputs one of a result of the first correlation calculation and a result of the second correlation calculation.
摘要翻译： 雷达装置包括：发射机，其操作中作为雷达传输信号，在每个传输周期内传输包括码长L的多个互补码的码序列; 接收器，其在操作中接收包括由对象反射的雷达传输信号的一个或多个反射波，并且是模拟信号; A / D转换器，其在操作中将一个或多个反射信号转换成数字信号，其为离散样本; 以及计算器，其在操作中执行离散样本与由发送器发送的代码序列之间的相关性的第一计算，以及离散样本之间的相关性的第二计算和通过提取代码长度L-Q获得的部分代码序列 （L>Q≥2），并且输出第一相关计算的结果和第二相关计算的结果之一。
-
公开(公告)号：US20150247924A1
公开(公告)日：2015-09-03
申请号：US14630105
申请日：2015-02-24
IPC分类号： G01S13/93
CPC分类号： G01S13/931 , G01S7/2813 , G01S7/292 , G01S7/2923 , G01S7/354 , G01S7/40 , G01S7/4026 , G01S7/411 , G01S7/414 , G01S7/415 , G01S13/26 , G01S13/325 , G01S13/343 , G01S13/582 , G01S13/93 , G01S2007/2886 , G01S2013/9375 , G01S2013/9385
摘要： Each of antenna system processors of a radar receiver generates, through correlation calculation of a reflection signal and a radar transmission signal, an array correlation signal for each delay in arrival of the reflection signal at each Doppler frequency. A static target candidate extractor extracts, on the basis of outputs of the antenna system processors and a Doppler frequency of a reflection signal from a static target located at a side of a moving body, array correlation signals corresponding to a candidate for the static target. A reference signal detector outputs a reference signal regarding the side of the moving body using, among the outputs of the static target candidate extractor, array correlation signals whose consistency is high. A correction value calculator calculates, using outputs of the reference signal detector, a correction value for correcting deviations between reception antennas included in an array antenna.
摘要翻译： 雷达接收机的每个天线系统处理器通过反射信号和雷达传输信号的相关计算产生针对每个多普勒频率处的反射信号到达的每个延迟的阵列相关信号。 静态目标候选提取器基于天线系统处理器的输出和来自位于移动体一侧的静态目标的反射信号的多普勒频率，提取与静态目标的候选对应的阵列相关信号。 参考信号检测器使用静态目标候选提取器的输出中的一致性高的阵列相关信号，输出关于移动体侧的参考信号。 校正值计算器使用参考信号检测器的输出来计算用于校正包括在阵列天线中的接收天线之间的偏差的校正值。
-
-
-
-
-
-
-
-
-
搜索结果
21 条记录 (耗时 0.017 秒)
