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公开(公告)号：US20220035044A1
公开(公告)日：2022-02-03
申请号：US17389028
申请日：2021-07-29
Applicant: QUALCOMM Incorporated
Inventor： Jordan COOKMAN , Krishnaranjan RAO , Jeffrey WONG , David TUCK
Abstract: In conditions in which Global Navigation Satellite System (GNSS) signal spoofing is likely occurring, a GNSS receiver may be operated in a reduced operational state with respect to one or more GNSS bands that are likely being spoofed. According to embodiments, a reduced operational state with regard to a GNSS band may comprise performing one or more of the following functions with respect to that GNSS band: disabling data demodulation and decoding, disabling time setting (e.g., time of week (TOW), week number, etc.) disabling acquisition of unknown/not visible satellites, disabling satellite differences, disabling error recovery, reducing non-coherent integration time, and duty cycling the power for one or more receiver blocks associated with the GNSS band.
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Patent Agency Ranking
公开(公告)号：US20220373696A1
公开(公告)日：2022-11-24
申请号：US17313486
申请日：2021-05-06
Applicant: QUALCOMM Incorporated
Inventor： Min WANG , Ning LUO , Gengsheng ZHANG , Zoltan BIACS , Mangesh CHANSARKAR , Jean-Michel ROUSSEAU , Dimitri RUBIN , David TUCK , Yuxiang PENG
IPC: G01S19/44
Abstract: Techniques for Ultra Wide-Lane (UWL) Real-Time Kinematic (RTK) positioning a mobile device may include obtaining, using a multi-band GNSS receiver of the mobile device: a first carrier-phase measurement of a first GNSS signal on a first GNSS carrier frequency, and a second carrier-phase measurement of a second GNSS signal on second GNSS carrier frequency. Techniques may further comprise providing a position estimate of the mobile device, wherein: the position estimate is determined from a wide-lane (WL) combination of the first carrier-phase measurement and the second carrier-phase measurement, and the WL combination has a combined carrier phase noise that is less than a pseudo-range noise of the first carrier-phase measurement and a pseudo-range noise of the second carrier-phase measurement.
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公开(公告)号：US20220291393A1
公开(公告)日：2022-09-15
申请号：US17201415
申请日：2021-03-15
Applicant: QUALCOMM Incorporated
Inventor： Arnold Jason GUM , Zoltan BIACS , Rayman Wai PON , David TUCK , Bo ZHENG , Jeffrey WONG
IPC: G01S19/19
Abstract: A wearable device that can receive a plurality of Global Navigation Satellite System (GNSS) timing signals using an antenna, where the antenna is located in an exterior portion of the wearable device such that the antenna receives GNSS signals at the external portion of the wearable device, without the GNSS signals first passing through an air gap within a housing of the wearable device. The wearable device is configured to determine a geographic location of the wearable device based at least in part on the GNSS signals. The wearable device is configurable to perform underwater dead-reckoning procedures, measuring energy levels during dwell periods, measuring efficiency of swim strokes, sharing wearable device information with other electronic devices, calibrating the wearable device, or a combination thereof.
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公开(公告)号：US20220163679A1
公开(公告)日：2022-05-26
申请号：US17103125
申请日：2020-11-24
Applicant: QUALCOMM Incorporated
Inventor： Kannan MUTHURAMAN , David TUCK
Abstract: Techniques are provided for utilizing a mobile device to estimate ionospheric delays in GNSS transmissions. An example method of determining a position of a mobile device includes obtaining a pseudorange measurements and carrier-phase measurements for a satellite at a first frequency band and a second frequency band, determining a bias estimate for the satellite based on a plurality of pseudorange measurements and carrier-phase measurements, determining a delta carrier-phase measurement for the satellite based on the carrier-phase measurements at the first frequency band and the second frequency band, and determining the position of the mobile device based at least in part on the delta carrier-phase measurement, and the pseudorange measurements, the carrier-phase measurements, or both.
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15.发明申请公开(公告)号：US20210405213A1
公开(公告)日：2021-12-30
申请号：US17359901
申请日：2021-06-28
Applicant: QUALCOMM Incorporated
Inventor： David TUCK , James STEPHEN , Inchara LAKSHMINARAYAN
Abstract: Techniques disclosed herein are directed to detect the presence of false, incorrect, or spoofed Global Navigation Satellite Systems (GNSS) signals. Embodiments may comprise receiving, at a mobile device, a global navigation satellite system (GNSS) signal via a GNSS antenna of the mobile device; determining first movement data based on the GNSS signal; determining second movement data based on data from one or more motion sensors of the mobile device, wherein the first movement data and the second movement data each comprise respective movement-related information regarding the mobile device during a time period; and providing an indication that GNSS error is occurring based on a determination that a difference between first movement data and the second movement data exceeds a threshold.
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公开(公告)号：US20190086552A1
公开(公告)日：2019-03-21
申请号：US15892442
申请日：2018-02-09
Applicant: QUALCOMM Incorporated
Inventor： David TUCK , Michael KOENIG
Abstract: Techniques are provided for determining a moving body's position and velocity in the presence of motion of a measuring device relative to the body. For example, a swimmer's position and velocity may be determined by compensating for bias that may result from a swimmer's arm swing. This may help avoid over-estimating a swimmer's velocity that results in inaccurate position estimation along the swimmer's path. To compensate for the swimmer's arm swing, an estimate of translational velocity due to arm rotation may be removed, e.g., from pseudo-range rates (PRRs) from satellite positioning system measurements, to reduce the systematic bias errors. A scale factor is applied to an estimated velocity of the swimmer's body to estimate the velocity of a mobile device on the swimmer's wrist, e.g., while above water.
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