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31. 发明授权

US4559606A Arrangement to provide an accurate time-of-arrival indication for a received signal 失效
标题翻译：为接收信号提供准确的到达时间指示的布置
公开(公告)号：US4559606A
公开(公告)日：1985-12-17
申请号：US512280
申请日：1983-07-11
申请人： Maurice L. Jezo , Ning H. Lu
发明人： Maurice L. Jezo , Ning H. Lu
IPC分类号： G01S13/26 , G01S7/292 , G01S11/08 , H04L7/00 , H04L7/02 , G06F15/336
CPC分类号： H04B1/707 , G01S11/08
摘要： The arrangement comprises a plurality of correlation means coupled to the received signal with the received signal being clocked into each of the plurality of correlation means by a different one of a plurality of different phased clocks with the different phased clocks occurring at a predetermined different time uniformly spaced over a given time interval and integration means coupled to each of the plurality of correlation means to provide the indication of the time of arrival of the received signals. The plurality of correlation means includes a plurality of shift registers into which the received signals are shifted by a different one of the plurality of phased clocks, a reference signal register and a plurality of comparison means each coupled to each stage of a different one of the plurality of shift registers and each stage of the common reference signal shift register to compare the contents of the associated stages of the plurality of signal shift registers and the single common reference signal shift register and to produce an output signal indicative of the results of each of the comparisons.
摘要翻译：该装置包括耦合到接收信号的多个相关装置，其中接收信号由多个不同相位时钟中的不同相位时钟同步地输入到多个相关装置中的每一个中，其中不同的相位时钟以预定的不同时间均匀地发生在给定时间间隔上间隔，并且积分装置耦合到多个相关装置中的每一个，以提供所接收信号的到达时间的指示。所述多个相关装置包括多个移位寄存器，所述接收信号由所述多个相控时钟中的不同的一个移位到所述移位寄存器中，参考信号寄存器和多个比较装置，多个移位寄存器和公共参考信号移位寄存器的每个级，以比较多个信号移位寄存器和单个公共参考信号移位寄存器的相关级的内容，并产生指示每个的结果的输出信号比较。

32. 发明授权

US4359779A FM Transmitter with frequency ramp phase and amplitude correction means 失效
标题翻译： FM发射机，具有频率斜坡相位和幅度校正装置
公开(公告)号：US4359779A
公开(公告)日：1982-11-16
申请号：US214092
申请日：1980-12-08
申请人： Arnold M. Levine
发明人： Arnold M. Levine
IPC分类号： G01S13/26 , H03B23/00 , H04B1/02
CPC分类号： H03B23/00 , G01S13/26 , H03B2200/0092
摘要： A system including a frequency ramp generator feeding a transmitting power amplifier and antenna through a phase modulator and gain-controllable, transmitter driver stage. The frequency ramp generated is sampled out through a wide band delay-line feeding a phase comparator, the other comparison input to the phase comparator being provided by a sampling probe at the transmitting power amplifier output. The phase comparator output is used as a phase correction signal applied to the phase modulator and an amplitude modulation detector also responsive to the signal on the transmitting power amplifier output provides a feedback signal controlling the gain of the transmitter driver on a high bandwidth basis. Accordingly, instantaneous and long term frequency ramp phase and amplitude variations are substantially cancelled out so that the power amplified output is an accurate replica of the originally generated frequency ramp.
摘要翻译：一种包括频率斜坡发生器的系统，其通过相位调制器和增益可控的发射器驱动级馈送发射功率放大器和天线。所产生的频率斜坡通过馈送相位比较器的宽带延迟线进行采样，相位比较器的另一比较输入由发射功率放大器输出端的采样探头提供。相位比较器输出用作施加到相位调制器的相位校正信号，并且还响应发射功率放大器输出上的信号的幅度调制检测器提供在高带宽的基础上控制发射器驱动器的增益的反馈信号。因此，瞬时和长期的频率斜坡相位和振幅变化基本抵消，使得功率放大输出是原始产生的频率斜坡的精确复制品。

33. 发明授权

US3883871A Method and modulation system for ambiguity reduction in pulsed radar 失效
标题翻译：脉冲雷达模糊度降低的方法和调制系统
公开(公告)号：US3883871A
公开(公告)日：1975-05-13
申请号：US34050173
申请日：1973-03-12
申请人： MOORE RANDOLPH G
发明人： MOORE RANDOLPH G
IPC分类号： G01S13/24 , G01S13/26 , G01S13/50 , G01S9/23
CPC分类号： G01S13/26 , G01S13/24
摘要： The modulation system of a pulsed radar includes a modulator having a generator for providing a radar pulse repetition frequency (PRF) signal and which pulse modulates a single frequency oscillator to develop a pulse modulated signal. The PRF signal also drives a divider circuit that creates a divided control signal in phase coherence with the PRF signal. The divided control signal enables a linear sawtooth frequency modulated (FM) oscillator to provide an FM signal having a modulation rate which is a submultiple of the PRF. The total deviation of the FM signal is a function of the PRF. A mixer circuit combines the FM and pulse modulated signals, and the sums of the frequency components thereof are selected by a filter to provide a modulated output signal which is suitable for being transmitted by a radar either directly or on a carrier. The modulated signal rotates the time-frequency plane of the pulse modulation ambiguity response pattern of the radar with respect to the amplitude axis so that unwanted ambiguities are shifted off of the time and frequency axes to facilitate velocity and range measurement.
摘要翻译：脉冲雷达的调制系统包括具有用于提供雷达脉冲重复频率（PRF）信号的发生器的调制器，并且脉冲调制单个频率振荡器以产生脉冲调制信号。 PRF信号还驱动分频器电路，其产生与PRF信号相位相干的分频控制信号。分频控制信号使得线性锯齿波调制（FM）振荡器能够提供具有PRF的分数的调制速率的FM信号。 FM信号的总偏差是PRF的函数。混频器电路组合FM和脉冲调制信号，并且其频率分量的和由滤波器选择，以提供适于由雷达直接或在载波上传输的调制输出信号。调制信号相对于振幅轴旋转雷达的脉冲调制模糊度响应模式的时间 - 频率平面，使得不必要的模糊度偏离时间轴和频率轴，以促进速度和距离测量。

34. 发明授权

US3451059A Echo ranging system of variable sensitivity and variable range resolution 失效
标题翻译：可变灵敏度和可变范围分辨率的ECHO范围系统
公开(公告)号：US3451059A
公开(公告)日：1969-06-17
申请号：US16695250
申请日：1950-06-08
申请人： ROBERT M PAGE
发明人： PAGE ROBERT M
IPC分类号： G01S13/26 , G01S13/70 , G01S9/06 , G01S7/28
CPC分类号： G01S13/26 , G01S13/70

35. 发明授权

US3188637A Fm pulsed radar with intrapulse range discrimination 失效
标题翻译： Fm脉冲雷达具有脉冲范围辨别
公开(公告)号：US3188637A
公开(公告)日：1965-06-08
申请号：US4095660
申请日：1960-07-05
申请人： MARCONI CO LTD
发明人： SINDEN MORTLEY WILFRID
IPC分类号： G01S13/26
CPC分类号： G01S13/26

36. 发明授权

US11921184B2 Methods and apparatus for characterising the environment of a user platform 有权
公开(公告)号：US11921184B2
公开(公告)日：2024-03-05
申请号：US17737098
申请日：2022-05-05
申请人： Locata Corporation Pty Ltd
发明人： David Small
IPC分类号： G01S13/00 , G01S13/26 , G01S13/32
CPC分类号： G01S13/003 , G01S13/26 , G01S13/325
摘要： Apparatus and methods are presented for characterising the environment of a user platform. In certain embodiments RF signals are transmitted and received through an antenna array having a plurality of elements activated in a predetermined sequence, and received signals are manipulated with round-trip path corrections to enhance the gain of the array in one or more directions. Objects in those directions are detected from the receipt of returns of transmitted signals, and the manipulated received signals processed to estimate range to those objects. In other embodiments RF signals transmitted by one or more external transmitters are received and manipulated to enhance the gain of a local antenna array or antenna arrays associated with the one or more transmitters to enhance the gain of the arrays in one or more directions. Objects in those directions are detected from the receipt of reflected signals from the transmitters, and the manipulated received signals processed to estimate range to those objects.

37. 发明公开

US20230396479A1 NETWORK NODE, AND METHODS PERFORMED THEREBY FOR DETERMINING MODULATION SYMBOLS 审中-公开
公开(公告)号：US20230396479A1
公开(公告)日：2023-12-07
申请号：US18250006
申请日：2020-10-26
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Robert BALDEMAIR
IPC分类号： H04L27/26 , G01S7/00 , G01S7/282 , G01S13/26
CPC分类号： H04L27/2636 , G01S7/006 , G01S7/282 , G01S13/26
摘要： A method, performed by a network node. The method is for determining modulation symbols. The network node includes a modulator based on Discrete-time Fourier Transform Spread (DFTS)-Orthogonal Frequency-Division Multiplexing (OFDM). The network node determines modulation symbols to be input into the modulator. Of a first set of the modulation symbols corresponding to a duration of a DFTS-OFDM symbol, only a first subset of modulation symbols are set to first values of magnitude exceeding zero by a first threshold. The modulation symbols in the first subset are determined to have a first contiguity arrangement. The network node then initiates providing the determined modulation symbols to the modulator.

38. 发明授权

US11815620B2 Digitally modulated radar transmitter modules, systems and methods 有权
公开(公告)号：US11815620B2
公开(公告)日：2023-11-14
申请号：US17083795
申请日：2020-10-29
申请人： NXP USA, INC.
发明人： Gustavo Guarin Aristizabal , Ralf Reuter , Maik Brett
IPC分类号： G01S7/282 , G01S13/26 , H04L27/20
CPC分类号： G01S7/282 , G01S13/26 , H04L27/20
摘要： A digitally modulated radar, DMR, transmitter module is disclosed comprising: a sequence generator, configured to generate a repeating digital sequence signal based on a relatively low-frequency clock signal; a mixer configured to combine the digital sequence signal with at least one phase-delayed copy of the digital sequence signal, to provide a combined signal; and a modulator configured to modulate a relatively high-frequency carrier signal, in dependence on the combined signal, to provide a modulated signal. Corresponding systems and methods are also disclosed.

39. 发明授权

US11754670B2 Stepped frequency radar systems with spectral agility 有权
公开(公告)号：US11754670B2
公开(公告)日：2023-09-12
申请号：US16683136
申请日：2019-11-13
申请人： MOVANO INC.
发明人： Michael A. Leabman
IPC分类号： G01S13/76 , G01S13/32 , G01S7/292 , G01S13/26 , A61B5/021 , A61B5/05 , G01S7/282 , G01S13/88 , G01S13/10 , G01S13/89 , G01S7/02 , G01S7/41 , G01S13/04 , G01S13/02 , G01S7/35 , G01S7/34 , G01S13/22 , G01S13/42 , G01S13/34
CPC分类号： G01S7/2925 , A61B5/021 , A61B5/05 , G01S7/0232 , G01S7/0234 , G01S7/282 , G01S7/412 , G01S13/04 , G01S13/106 , G01S13/26 , G01S13/32 , G01S13/76 , G01S13/88 , G01S13/887 , G01S13/89 , G01S7/023 , G01S7/34 , G01S7/35 , G01S7/354 , G01S13/0209 , G01S13/227 , G01S13/343 , G01S13/347 , G01S13/42 , G01S13/426
摘要： A stepped frequency radar system is disclosed. The system includes components for performing stepped frequency scanning across a frequency range using frequency steps of a step size, the stepped frequency scanning performed using at least one transmit antenna and a two-dimensional array of receive antennas, changing at least one of the step size and the frequency range, and performing stepped frequency scanning using the at least one transmit antenna and the two-dimensional array of receive antennas and using the changed at least one of the step size and the frequency range.

40. 发明授权

US11506773B1 Compact, high-efficiency radar assembly 有权
公开(公告)号：US11506773B1
公开(公告)日：2022-11-22
申请号：US17751593
申请日：2022-05-23
申请人： Numerica Corporation
发明人： Evan Jackson Everett , James Nathaniel Knight , Andrew Scott Mank , Erik George Moore
IPC分类号： G01S13/26 , G01S13/48 , H01Q1/22 , H01Q3/36 , G01S13/02
摘要： Provided is an array antenna divided into a plurality of sub-arrays disposed along a first dimension, wherein each sub-array comprises: a plurality of frequency scannable elements disposed along the first dimension and a plurality of phase shifters or transmit/receive (T/R) modules disposed along a second spatial dimension, each phase shifter or T/R module connected to a plurality of frequency scannable elements disposed along the first spatial dimension; and one or more processors being configured to generate a recurring radar waveform having a transmit portion, the transmit portion having multiple successive pulses at different frequencies to generate transmit beams by the array antenna at different angles in the first dimension; control at least one of the plurality of phase shifters or T/R modules along the second dimension to cause the transmit beams to be generated by the array antenna at different angles in the second dimension; and process return signals received by the plurality of sub-arrays to estimate a target location.

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