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1. 发明申请

US20180313958A1 SATELLITE NAVIGATION RECEIVER WITH FIXED POINT SIGMA RHO FILTER 审中-公开
公开(公告)号：US20180313958A1
公开(公告)日：2018-11-01
申请号：US16030483
申请日：2018-07-09
申请人： Deere & Company
发明人： Wei Yu , Richard G. Keegan , Ronald R. Hatch
IPC分类号： G01S19/29
CPC分类号： G01S19/29 , G01S19/30 , G01S19/36 , G01S19/37
摘要： A multi-band satellite navigation receiver for carrier and code tracking using a fixed point sigma rho filter with improved stability is described. The receiver simplifies and speeds up the data processing in the filter to adaptively accommodate common information from aggregate bands and obtain the accurate position of the receiver in real time. The filter may utilize a standard deviation function and a cross correlation function while determining adaptive scale factors to ensure that the filter is stable and reliable.

2. 发明申请

US20180095178A1 METHODS AND DEVICES FOR COMPENSATING MISADJUSTMENT OF A GNSS DEVICE 审中-公开
公开(公告)号：US20180095178A1
公开(公告)日：2018-04-05
申请号：US15282601
申请日：2016-09-30
申请人： Intel Corporation
发明人： Ran Harel , Tomer Dahan
IPC分类号： G01S19/23
CPC分类号： G01S19/235 , G01S19/26 , G01S19/29
摘要： This disclosure relates to a control device for compensating misadjustment of a tunable code loop filter of a portable global navigation satellite system (GNSS) device due to movement of the GNSS device, the control device comprising: a waveform estimator configured to estimate a signal-to-noise ratio (SNR) waveform based on an SNR of a radio signal received by the GNSS device; and a controller configured to tune the code loop filter based on the estimated SNR waveform to compensate for misadjustment of the code loop filter due to movement of the GNSS device.

3. 发明申请

US20180011200A1 SATELLITE SIGNAL EXCLUSION BASED ON DOPPLER INFORMATION 审中-公开
公开(公告)号：US20180011200A1
公开(公告)日：2018-01-11
申请号：US15202701
申请日：2016-07-06
申请人： QUALCOMM Incorporated
发明人： Madhukar RAMAMURTHY , Gowthami ITTA , Vivek GARG
IPC分类号： G01S19/25 , G01S19/42 , G01S19/41 , G01S19/52 , G01S19/51
CPC分类号： G01S19/254 , G01S19/20 , G01S19/22 , G01S19/23 , G01S19/29 , G01S19/41 , G01S19/423 , G01S19/425 , G01S19/428 , G01S19/51 , G01S19/52
摘要： A device that includes a receiver that receives multiple positioning signals from a satellite, including a positioning signal and remaining positioning signals, and a processor communicatively coupled to the receiver. The processor determines a speed value of the device based on a Doppler shift of the positioning signal. The speed value is a magnitude of a velocity of the device in a direction. The processor also determines that the speed value is not consistent with at least one other measurement and determines the position of the device using the remaining positioning signals.

4. 发明授权

US09857475B2 Cellular interferometer for continuous earth remote observation (CICERO) 有权
公开(公告)号：US09857475B2
公开(公告)日：2018-01-02
申请号：US12206927
申请日：2008-09-09
申请人： Thomas Patrick Yunck
发明人： Thomas Patrick Yunck
IPC分类号： G01S19/14 , G01S19/29 , B64G1/10
CPC分类号： G01S19/14 , B64G1/1021 , B64G1/1085 , G01S13/90 , G01S13/9023 , G01S19/29
摘要： A fleet of small spacecraft (“cells”) in low Earth orbit combine to form an integrated Earth observing system providing many observations previously requiring distinct sensing systems. Each cell performs a few relatively primitive functions, including emission, reception, sampling, and recording of radio and microwave signals. Each cell observes over a spherical field of view, samples the received signals independently at many small antenna elements, and stores the data from each element. Data from all cells are sent to a common location where they can be combined in diverse ways to realize a wide range of observing functions. These functions may include ionosphere and gravity field mapping; atmospheric radio occultation; ocean, ice, and land altimetry; ocean scatterometry; synthetic aperture radar (SAR) imaging; radar sensing of soil moisture, land cover, and geological surface properties; and interferometric SAR sensing of surface change. The system can also provide real-time messaging, navigation and surveillance functions.

5. 发明授权

US09817128B2 Method of generating correlation function with no side-peak and system for tracking binary offset carrier signal 有权
公开(公告)号：US09817128B2
公开(公告)日：2017-11-14
申请号：US14125734
申请日：2011-11-02
申请人： Youngpo Lee , Dahae Chong , Junhwan Kim , Seung Goo Kang , Seokho Yoon
发明人： Youngpo Lee , Dahae Chong , Junhwan Kim , Seung Goo Kang , Seokho Yoon
IPC分类号： G08C17/02 , G01S19/29 , G01S19/01 , G01S19/13 , G01S19/30
CPC分类号： G01S19/29 , G01S19/01 , G01S19/13 , G01S19/30
摘要： Disclosed herein are a method of generating a correlation function with no side-peak and a system for tracking a BOC signal in order to synchronize the BOC signal. The method of generating a correlation function includes step S1 of generating sub-correlation functions {Sl(τ)}l=0N−1, step S2 of generating a first final correlation function R0(τ) by combining some of the sub-correlation functions, and step S3 of generating a second final correlation function Rproposed(τ) by combining R0(τ) with each of the remaining sub-correlation functions that have not been used for the combination at step S2. The BOC signal is one or more of BOCsin(kn,n) and BOCcos(kn,n) signals.

6. 发明授权

US09720097B2 Multi-antenna radio-navigation signals reception device 有权
公开(公告)号：US09720097B2
公开(公告)日：2017-08-01
申请号：US13847416
申请日：2013-03-19
申请人： THALES
发明人： Nicolas Martin , Vincent Chopard , David Depraz
IPC分类号： G01S19/29 , G01S19/14 , G01S19/24 , G01S19/35
CPC分类号： G01S19/29 , G01S19/14 , G01S19/24 , G01S19/35
摘要： The invention relates to a device for receiving satellite radio-navigation signals comprising a plurality of receiving antennas forming an antenna array. The invention consists in using a plurality of antennas disposed around the circumference of a carrier and in demodulating the signals received by each antenna separately. The diversity of the demodulation chains is utilized to compensate the signal loss on one of the chains when the corresponding antenna experiences a signal loss due to the masking of the satellite by the carrier.

7. 发明申请

US20170102465A1 SATELLITE NAVIGATION RECEIVER WITH FIXED POINT SIGMA RHO FILTER 审中-公开
公开(公告)号：US20170102465A1
公开(公告)日：2017-04-13
申请号：US14880852
申请日：2015-10-12
申请人： Deere & Company
发明人： Wei Yu , Richard G. Keegan , Ronald R. Hatch
IPC分类号： G01S19/29
CPC分类号： G01S19/29 , G01S19/30 , G01S19/36 , G01S19/37
摘要： A multi-band satellite navigation receiver for carrier and code tracking using a fixed point sigma rho filter with improved stability is described. The receiver simplifies and speeds up the data processing in the filter to adaptively accommodate common information from aggregate bands and obtain the accurate position of the receiver in real time. The filter may utilize a standard deviation function and a cross correlation function while determining adaptive scale factors to ensure that the filter is stable and reliable.

8. 发明申请

US20170078083A1 Tracking of signals with at least one subcarrier 有权
标题翻译：跟踪具有至少一个子载波的信号
公开(公告)号：US20170078083A1
公开(公告)日：2017-03-16
申请号：US15265569
申请日：2016-09-14
申请人： Airbus DS GmbH
发明人： Jean-Jacques FLOCH , Francis SOUALLE , Jan WENDEL , Frank SCHUBERT
IPC分类号： H04L7/033 , H04L27/152
CPC分类号： H04L7/033 , G01S19/29 , G01S19/30 , H03L7/02 , H03L7/07 , H03L7/22 , H04L27/152
摘要： A system for tracking a received signal with a subcarrier, the received signal representing a carrier signal modulated with a code signal and with a subcarrier signal. The system comprises independent and cooperatively operating loops: a phase lock loop tracking the carrier signal, a subcarrier lock loop tracking the subcarrier signal, and a delay lock loop tracking the code signal. The subcarrier lock loop comprises a first controllable oscillator and a first early-minus-late discriminator generating a control signal for the first controllable oscillator. The delay lock loop comprising a second controllable oscillator and a second arctan discriminator generating a control signal for the second controllable oscillator.
摘要翻译：一种用副载波跟踪接收信号的系统，所述接收信号表示用码信号和副载波信号调制的载波信号。该系统包括独立且协同工作的环路：跟踪载波信号的锁相环，跟踪副载波信号的子载波锁定环路和跟踪码信号的延迟锁定环路。子载波锁定环路包括第一可控振荡器和产生用于第一可控振荡器的控制信号的第一早期 - 迟迟鉴别器。所述延迟锁定环包括第二可控振荡器和产生第二可控振荡器的控制信号的第二arctan鉴别器。

9. 发明授权

US09551792B2 GPS antenna diversity and noise mitigation 有权
标题翻译： GPS天线多样性和噪声减轻
公开(公告)号：US09551792B2
公开(公告)日：2017-01-24
申请号：US14157179
申请日：2014-01-16
申请人： MaxLinear, Inc.
发明人： Anand K. Anandakumar , Maxime LeClercq
IPC分类号： G01S19/29 , G01S19/24 , G01S19/37 , G01S19/30
CPC分类号： G01S19/24 , G01S19/246 , G01S19/29 , G01S19/30 , G01S19/37
摘要： A system and method for improving acquisition sensitivity and tracking performance of a GPS receiver using multiple antennas is provided. In an embodiment, the acquisition sensitivity can be improved by determining the correlation weight of each received path signal associated with one antenna from a plurality of antennas and then combining the path signals based on their respective correlation weight. In another embodiment, carrier offset correction information of each path signal is individually determined and then summed together to be used for tracking the code phase in a code phase tracking loop. The code phase tracking loop generates an early code and a late code that are used to determine the code phase error. The system includes digital adaptive filters to mitigate narrowband and broadband noises of a received GPS signal, wherein the digital adaptive filters are switched on periodically or by external events.
摘要翻译：提供了一种用于提高使用多个天线的GPS接收机的采集灵敏度和跟踪性能的系统和方法。在一个实施例中，可以通过确定与多个天线中的一个天线相关联的每个接收路径信号的相关权重，然后基于它们各自的相关权重组合路径信号来提高采集灵敏度。在另一个实施例中，各路径信号的载波偏移校正信息被单独确定，然后相加在一起，以用于跟踪码相位跟踪环路中的码相位。代码相位跟踪循环产生用于确定代码相位误差的早期代码和后期代码。该系统包括数字自适应滤波器以减轻接收的GPS信号的窄带和宽带噪声，其中数字自适应滤波器周期性地或外部事件被接通。

10. 发明申请

US20160294438A1 SCANNING CORRELATOR FOR GLOBAL NAVIGATION SATELLITE SYSTEM SIGNAL TRACKING 有权
标题翻译：全球导航卫星系统信号跟踪扫描相关器
公开(公告)号：US20160294438A1
公开(公告)日：2016-10-06
申请号：US14672569
申请日：2015-03-30
申请人： Honeywell International Inc.
发明人： Jussi Raasakka , Martin Orejas , Ondrej Kutik , Jakub Skalicky
IPC分类号： H04B1/709 , G01S19/22 , G01S19/30 , G01S19/29 , G01S19/26 , G01S19/36
CPC分类号： H04B1/709 , G01S19/22 , G01S19/26 , G01S19/29 , G01S19/30 , G01S19/36 , G01S19/37
摘要： Systems and methods for a scanning correlator for global navigation satellite system signal tracking are provided. In one embodiment, a method for Global Navigation Satellite System (GNSS) receiver tracking comprises: receiving a GNSS navigation signal; generating a local Pseudo Random Noise (PRN) sequence; sampling the GNSS navigation signal over a plurality of integration periods to produce a plurality of scanning values, wherein each scanning value has a respective time offset such that at least one first time offset is not equal to at least one second time offset; estimating at least two points of an autocorrelation function for the GNSS navigation signal based on the plurality of scanning values; and calculating an alignment between the GNSS signal and the local PRN sequence based on the autocorrelation function estimate.
摘要翻译：提供了用于全球导航卫星系统信号跟踪的扫描相关器的系统和方法。在一个实施例中，一种用于全球导航卫星系统（GNSS）接收机跟踪的方法包括：接收GNSS导航信号; 产生本地伪随机噪声（PRN）序列; 在多个积分周期中对GNSS导航信号进行采样以产生多个扫描值，其中每个扫描值具有相应的时间偏移，使得至少一个第一时间偏移不等于至少一个第二时间偏移; 基于所述多个扫描值，估计GNSS导航信号的自相关函数的至少两个点; 以及基于所述自相关函数估计来计算所述GNSS信号和所述本地PRN序列之间的对准。

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