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公开(公告)号：US11639992B2
公开(公告)日：2023-05-02
申请号：US16911773
申请日：2020-06-25
申请人： INTEL CORPORATION
发明人： Lior Maor , Moshe Teplitsky , Alon Cohen , Ilia Yoffe
IPC分类号： G01S13/931 , G01S7/03 , G01S13/42 , G01S19/29 , G01S19/44
摘要： For example, an apparatus may include a radar processor to process radar receive (Rx) data, the radar Rx data based on radar signals received via a plurality of Rx antennas of a Multiple-Input-Multiple-Output (MIMO) radar antenna; and to generate radar information by applying an Amplitude Phase Estimation (APES) calculation to the radar Rx data.
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2.发明授权公开(公告)号：US11635525B2
公开(公告)日：2023-04-25
申请号：US17137445
申请日：2020-12-30
发明人： Qiang Wang
摘要： A method is for detecting loss-of-lock of a GNSS (Global Navigation Satellite System) signal tracking loop based on frequency compensation, comprising the following steps of: performing multi-channel frequency compensation on I-channel and Q-channel signals after down-conversion, pseudo-code stripping and integration clearing; then, performing coherent integration and non-coherent integration for a fixed time, and taking a maximum value of non-coherent integration results as a signal value; performing parabolic interpolation frequency identification, and taking an average value of the non-coherent integration results with the frequency differences of +/−50 Hz and +/−100 Hz as a noise value; and finally, calculating a ratio of the signal value to the noise value, and performing loss-of-lock detection with the ratio as a detection volume.
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公开(公告)号：US20230111314A1
公开(公告)日：2023-04-13
申请号：US16958019
申请日：2019-11-13
申请人： SHAN DONG UNIVERSITY
发明人： Juanjuan SUN , Mengqi CHEN , Xuezheng HUANG , Yong WANG , Xing WANG , Zihan WU
摘要： A GNSS signal acquisition method based on FPGA step-by-step code phase refinement comprises steps as follows: (1) Coarse acquisition: correlate all received data with the locally generated carrier and the complete pseudo-random code to find the maximum correlation value; obtain the carrier and the rough code phase for fine acquisition if the maximum correlation value conforms to the acquisition threshold; otherwise, repeat Step (1). (2) Fine acquisition: feedback the carrier and the coarse acquisition code phase value from Step (1) to the controller so that the controller can intercept partial of the received signal for mixing with the local carrier from Step (1); then, correlate the result with partial pseudo-random code after eliminating the influence of the carrier to obtain a code phase with higher accuracy.
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公开(公告)号：US20230061599A1
公开(公告)日：2023-03-02
申请号：US17983835
申请日：2022-11-09
发明人： Lei XIA , Hailu Jia , Xi Chen , Guangdi Shan
摘要： A positioning method, an electronic device and a storage medium, which relate to a field of computer technology, and in particular to fields of positioning technology and satellite navigation technology. The method includes: acquiring satellite observation data for a target object, broadcast ephemeris data for the target object, and state space representation for the target object; performing an error correction on the broadcast ephemeris data using the state space representation; determining a target positioning model according to the satellite observation data and the corrected broadcast ephemeris data; and performing a resolving operation on the target positioning model to obtain position data of the target object.
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公开(公告)号：US11579308B2
公开(公告)日：2023-02-14
申请号：US17378821
申请日：2021-07-19
申请人： Regulus Cyber Ltd.
发明人： Avner Zangvil , Gal Cohen , Stanislav Gutliansky , David Ramati , Yoav Zangvil
摘要： A duplicate peak detector acquires and tracks a first correlation peak for a data sequence associated with a navigation satellite in a satellite navigation signal. During tracking of the first correlation peak, a second correlation peak is acquired and tracked for the same data sequence. Respective values of at least one tracking variable of the two correlation peaks are analyzed, and based on the analysis it is determined whether the first and second correlation peaks are associated with the same navigation signal or different navigation signals. If the first correlation peak and the second correlation peak are associated with the same navigation signal, tracking of one of the correlation peaks is discontinued.
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公开(公告)号：US20230026875A1
公开(公告)日：2023-01-26
申请号：US17436606
申请日：2021-03-02
申请人： Pavel Igorevich Ignatiev , Vasiliy Mikhaylovich Dmitriev , Sergey Vladislavovich Averin , Viacheslav Viktorovich Lanovets
发明人： Pavel Igorevich Ignatiev , Vasiliy Mikhaylovich Dmitriev , Sergey Vladislavovich Averin , Viacheslav Viktorovich Lanovets
摘要： An apparatus for surveying a position of a static point, consisting of a GNSS receiver and a mobile computing device, connected with GNSS receiver via communication interface. The mobile computing device accepts from GNSS receiver several estimations of position of a static point within a single session and computes combined result for the current session, which is the average of those estimations. After that, a reset command is send to a GNSS receiver, and another session is performed in order to get another combined result. The process continues until a required number of mutually consistent session results is collected, where ‘consistent’ means having the scatter of session results within a certain margin. Upon collecting the required number of consistent session results, they are combined to compute a single estimate of the position of a static point, which is considered as a result of survey.
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公开(公告)号：US11493638B2
公开(公告)日：2022-11-08
申请号：US17034255
申请日：2020-09-28
摘要： A multipath (MP) carrier phase detector is disclosed that uses phase differences in the output of Early/Prompt/Late (EPL) correlation for MP detection. Embodiments may take coherent integrations of EPL correlator outputs and determine the respective carrier phase of each output. Phase differences can then be computed, and integer cycles and biases can be removed. MP can then be identified if a maximum phase difference of the EPL correlator outputs are determined to be above a certain threshold. According to some embodiments, false positives may be reduced by averaging phases and/or phase differences over a plurality of samples, and/or if a threshold number of consecutive MP detections have been made.
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公开(公告)号：US20220276393A1
公开(公告)日：2022-09-01
申请号：US17632088
申请日：2019-08-01
摘要： Various embodiments of the present technology generally relate to multi-frequency satellite navigation receiver technology. More specifically, some embodiments relate to an inter-frequency signal aiding technique for multi-frequency signal tracking in a multi-frequency receiver. The present technology enables a satellite navigation receiver (such as GPS) to continue operation, or to have improved performance, in environments where signals on one or more frequency bands experience fading. Some embodiments can estimate parameters of signal channels that experience fading based on measurements obtained from all or other less compromised frequency bands in linear operation by the receiver. Some embodiments can optimally estimate carrier parameters of navigation signals with consideration of relative measurement qualities. These parameters are used to construct the local reference signals, maintain lock on the fading signals, and obtain accurate positioning solutions and remote sensing observations.
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9.发明申请公开(公告)号：US20220137234A1
公开(公告)日：2022-05-05
申请号：US17090688
申请日：2020-11-05
申请人： u-blox AG
摘要： A method of and a receiver for mitigating multipath interference in a global navigation satellite system. In accordance with an embodiment, GNSS signals are received from a plurality of satellites in at least two frequency bands. A likelihood indicator is determined which is indicative of how likely the received GNSS signals are affected by multipath interference. In response to the likelihood indicator, all GNSS signals from at least one frequency band of the at least two frequency bands are discounted. The received GNSS signals are processed by taking into account said discounting of all GNSS signals in the at least one frequency band. The discounting may include assigning less weight to the discounted frequency bands or disregarding each of the discounted frequency bands in their entirety.
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公开(公告)号：US20220099841A1
公开(公告)日：2022-03-31
申请号：US17034255
申请日：2020-09-28
摘要： A multipath (MP) carrier phase detector is disclosed that uses phase differences in the output of Early/Prompt/Late (EPL) correlation for MP detection. Embodiments may take coherent integrations of EPL correlator outputs and determine the respective carrier phase of each output. Phase differences can then be computed, and integer cycles and biases can be removed. MP can then be identified if a maximum phase difference of the EPL correlator outputs are determined to be above a certain threshold. According to some embodiments, false positives may be reduced by averaging phases and/or phase differences over a plurality of samples, and/or if a threshold number of consecutive MP detections have been made.
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