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1.发明授权公开(公告)号：US12130376B2
公开(公告)日：2024-10-29
申请号：US18694705
申请日：2023-10-13
CPC分类号： G01S7/292 , G01S7/32 , G01S7/411 , G01S13/282
摘要： A method comprising: obtaining I/Q data associated with a received radar signal; performing background subtraction on the I/Q data to obtain a subtracted signal; applying an algorithm to the subtracted signal to obtain a filtered signal, wherein the algorithm is based on a MSE filter; performing time-gating on the filtered signal to obtain a time-gated signal; applying a FFT to convert the time-gated signal to a frequency-domain signal; and applying a calibration set to the frequency-domain signal to extract an RCS of an OUT; and a system for conducting the method.
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2.发明公开公开(公告)号：US20240319336A1
公开(公告)日：2024-09-26
申请号：US17747725
申请日：2022-05-18
申请人： VIETTEL GROUP
发明人： Van Long Do , Tran Minh Nguyen , Van Tho Nguyen , Anh Hung Hoang , Trung Duc Dang , Thai Binh Nguyen , Manh Linh Nguyen
CPC分类号： G01S7/414 , G01S7/2886 , G01S7/2925 , G01S7/354
摘要： Radar signal detection and parameter estimation is central in passive surveillance systems, providing inputs for many information processing modules in order to detect, localize, indentify and intercept hostile targets. The proposed method for detecting radar signals and estimating their intra-pulse parameters in time-varying noisy environments consists of several stages: magnitude-squared envelopes calculation, adaptive noise floor estimation, detection statistics calculation, rising edge detection, time of arrival estimation, falling edge detection, time of departure estimation, pulse width estimation, amplitude estimation and center frequency and bandwidth estimation. Estimated intra-pulse parameters are wrapped into pulse descriptor words (PDWs) for information processing tasks, where each PDW consists of time of arrival, time of departure, pulse width, pulse amplitude, center frequency, signal bandwidth, noise floor level and additional useful information. The method is sequential, implemented in hardware platforms for real-time surveillance applications. The proposed method yielded much better performance than classical threshold-based edge (TED) detection methods.
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公开(公告)号：US20240288536A1
公开(公告)日：2024-08-29
申请号：US18572291
申请日：2022-06-29
申请人： MEYSENS GMBH
发明人： Alexander RUDOY , Christian WELK , Michele CORONA
CPC分类号： G01S7/2921 , G01S7/527
摘要： The invention relates to a method for determining a transmission signal in at least one received signal (3, 4, 5), wherein the method has the following steps:
sending a transmission signal (1) via a transmitter (7),
receiving the signal (3, 4, 5), which contains at least part of the transmission signal, characterized in that
to determine the transmission signal in the received signal (3, 4, 5), a time-dependent transmitter property value is used, which results from a physical structure of the transmitter (7).-
公开(公告)号：US20240192355A1
公开(公告)日：2024-06-13
申请号：US18286340
申请日：2022-06-07
发明人： Dan ZHANG , Kapil GULATI , Junyi LI , Ahmed BEDEWY , Stelios STEFANATOS
IPC分类号： G01S13/72 , G01S7/288 , G01S7/292 , G01S7/41 , G01S13/931
CPC分类号： G01S13/726 , G01S7/2883 , G01S7/2922 , G01S7/2927 , G01S7/412 , G01S13/931
摘要： This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for radar target tracking based on return signal strength. A wireless device, such as a radar device, may measure a received signal strength of a detected signal. The received signal strength may be associated with at least one bin of a radar image. The wireless device may compare the received signal strength to a filtered signal strength. The filtered signal strength may be associated with a threshold difference in signal strength from the filtered signal strength. The wireless device may track the at least one bin of the radar image in response to the received signal strength being less than or equal to the threshold difference in signal strength from the filtered signal strength.
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公开(公告)号：US20240183939A1
公开(公告)日：2024-06-06
申请号：US18420133
申请日：2024-01-23
发明人： Sujaata Ramalingam , Karthik Subburaj , Pankaj Gupta , Anil Varghese Mani , Karthik Ramasubramanian , Indu Prathapan
IPC分类号： G01S7/292 , G01S7/40 , G01S13/524
CPC分类号： G01S7/2922 , G01S7/4004 , G01S13/5246
摘要： In a system a register stores data samples and includes a cell under test (CUT) in which a test data sample is stored, a first window of multiple cells on one side of the CUT, and a second window of multiple cells on the other side of the CUT. A rank determining circuit receives an incoming data sample entering the register and data sample(s) currently in cell(s) in the first window of multiple cells. A sorted index array stores ranks of data samples that are stored in the register. Comparing and selection circuitry selects a Kth smallest index from the sorted index array and a corresponding data sample from the register. A target comparator receives the test data sample and the data sample corresponding to the Kth smallest index of the sorted index array, and outputs a target detection signal.
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公开(公告)号：US20240168128A1
公开(公告)日：2024-05-23
申请号：US18458273
申请日：2023-08-30
申请人： NXP B.V.
CPC分类号： G01S7/411 , G01S7/006 , G01S7/038 , G01S7/292 , G01S13/0209 , G01S13/522 , G01S13/86
摘要： A method for operating a UWB communication unit (100), comprising the steps:
a) transmitting a UWB signal and receiving channel-impulse-responses, CIR;
b) removing of data concerning a coupling path between TX and RX and performing a drift compensation of the data concerning the coupling path;
c) detection of target peaks;
d) pruning of peaks in a peak list with target peaks;
e) assigning a confidence value to selected peaks and adapting a confidence value of the selected peaks; and
f) extracting at least one peak concerning a human target (T1, T2) out of the list of peaks which has a specified confidence value after completion of step e).-
公开(公告)号：US11982742B2
公开(公告)日：2024-05-14
申请号：US17278508
申请日：2019-11-06
申请人： Robert Bosch GmbH
发明人： Udo Sieber , Ulrich Bauer
IPC分类号： G01S15/931 , G01S7/292 , G01S7/521
CPC分类号： G01S15/931 , G01S7/2926 , G01S7/521
摘要： An object recognition device for vehicles, including a sensor, a filter device and an analysis device. Signals from an object are detectable by the sensor. The detected signals are filterable by the filter device and then feedable to the analysis device. The analysis device is configured to recognize the object by analyzing the filtered signals. The filter device includes an averaging unit, which averages the profile of the amplitudes of the detected signals, and a non-linear filter unit, which is provided based on a linear low-pass filter with a variable time constant and filters the detected signals. A value profile corresponding to the difference between the averaged amplitude profile and the filtered signals is feedable to the analysis device for analyzing and recognizing the object. The variable time constant is establishable based on the difference between the filtered signals and the detected signals and based on the averaged amplitude profile.
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公开(公告)号：US11977177B2
公开(公告)日：2024-05-07
申请号：US17420781
申请日：2019-12-27
申请人： XCO Tech Inc.
发明人： Eric Derbez , Scott Stephens
CPC分类号： G01S7/2926 , G01S7/4021
摘要： There is provided a subject location system, including a master processing unit, a receiver, and at least one Tag associated with the subject. The system includes a Hub with a master processing unit and the Tag includes transponders. Range and phase data are used to calculate the position of the Tag in relation to the Hub, and phase cycle errors are eliminated by, the use of a cyclical search minimizing an innovation inner product.
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公开(公告)号：US11977143B2
公开(公告)日：2024-05-07
申请号：US17436366
申请日：2020-03-11
发明人： Erik Bengtsson , Rickard Ljung , Fredrik Rusek , Olof Zander , Zhinong Ying
CPC分类号： G01S13/12 , G01S7/2921
摘要： A radio communication terminal (UE2) configured to act as a radar receiver, comprising: —a radio transceiver (323), —logic (320) configured to communicate data, via the radio transceiver, on a radio channel (101), wherein the logic is further configured to obtain (233), via the radio transceiver, a radar probing request (230) to detect radio signal echoes; determine (235) a receive direction (Dir2) based on the request; control the radio transceiver to detect (242) a receive property of the radio signal echoes in said direction; and transmit (261), via the radio transceiver, data (260) associated with the detected receive property to a radio communication device (BS1, UE1).
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公开(公告)号：USRE49920E1
公开(公告)日：2024-04-16
申请号：US17706418
申请日：2022-03-28
发明人： Takaaki Kishigami
CPC分类号： G01S7/0234 , G01S7/023 , G01S7/288 , G01S7/2921 , G01S13/04 , G01S13/106 , G01S13/288 , G01S13/86
摘要： A radar apparatus includes a radar transmitter that transmits a radar signal in a predetermined transmission cycle and a radar receiver that receives a reflection wave signal being a reflection of the radar signal on a target. The radar transmitter includes a phase rotation controller that randomly varies a pattern of a phase rotation every period corresponding to a plurality of transmission cycles, the pattern being to be applied to the radar signal within a period, and a transmission phase rotator that assigns a first phase rotation to the radar signal in accordance with the pattern. The radar receiver includes a reception phase rotator that assigns a second phase rotation in a direction opposite to a direction of the first phase rotation to the reflection wave signal in accordance with the pattern.
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