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公开(公告)号：US20240337596A1
公开(公告)日：2024-10-10
申请号：US18749755
申请日：2024-06-21
发明人： Linda BARRETT
IPC分类号： G01N21/3563 , G01N21/359 , G01N21/85 , G01N33/24 , G01S19/26
CPC分类号： G01N21/3563 , G01N21/359 , G01N21/8507 , G01N33/24 , G01S19/26 , G01N2021/855 , G01N2201/0636 , G01N2201/0638 , G01N2201/08
摘要： A method for mapping distribution of chemical compounds in soil is described herein including inserting a probe into the soil, obtaining spectroscopic data regarding the soil, sampling a core of soil adjacent to the probe locations, dividing the core into multiple depth increments, analyzing the core samples, matching each core sample with a corresponding depth increment of the probe insertions, obtaining data from the probe insertions, dividing the probe insertion data into training, validation, and test categories, resampling spectral variables from the probe insertion data to a wavelength interval longer than a native wavelength interval of an associated spectrometer, normalizing the probe insertion data on a spectrum by spectrum basis, utilizing a machine learning normalization algorithm, standardizing the spectral variables to a common scale by removing a mean and scaling to unit variance, and choosing a model utilizing the test set.
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82.发明授权公开(公告)号：US12050283B2
公开(公告)日：2024-07-30
申请号：US17089086
申请日：2020-11-04
IPC分类号： G01S5/00 , G01S5/02 , G01S19/26 , H04B7/0413
CPC分类号： G01S5/0294 , G01S19/26 , H04B7/0413
摘要： Position information estimation in a distributed radio frequency (RF) communications system is provided. Embodiments disclosed herein facilitate high-precision estimations of positions, orientations, velocities, and acceleration of network nodes in a distributed RF network. The distributed RF communications system incorporates a series of estimation processes which makes it susceptible to propagation of errors. To ensure robustness of the distributed RF communications system, relative positions of network nodes are tracked by iteratively tracking parameters used for estimating position information. Some embodiments take advantage of Kalman filtering algorithms by leveraging principles directed by physics. At every network node, several filtering algorithms can be employed to synchronize clocks, track delay between multiple-input multiple-output (MIMO) antennas and estimate position and orientation of other network nodes. Information from other sensors like global positioning system (GPS) and inertial navigation system (INS) can also be employed to further improve estimation processes.
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公开(公告)号：US12007312B2
公开(公告)日：2024-06-11
申请号：US18491236
申请日：2023-10-20
发明人： Lamalani Suarez , David Perry , Linda Barrett
IPC分类号： G01N21/3563 , G01N21/359 , G01N21/85 , G01N33/24 , G01S19/26
CPC分类号： G01N21/3563 , G01N21/359 , G01N21/8507 , G01N33/24 , G01S19/26 , G01N2021/855 , G01N2201/0636 , G01N2201/0638 , G01N2201/08
摘要： A spectrometer probe is disclosed herein including a shaft having a first end and a second end, a fiberoptic bundle located within the shaft, the fiberoptic bundle having a first end and a second end, a mirror, a transparent window, a prism, a prism support, an elastically deformable material, an index-matching elastomer, wherein the prism is completely encompassed by the index-matching elastomer, and a penetration cone operatively attached to the second end of the fiberoptic bundle, the mirror located within the second end of the shaft, wherein the transparent window is substantially parallel with the fiberoptic bundle and the shaft, wherein the prism is angled at approximately a 45 degree angle in relation to the window and the fiberoptic bundle, wherein the prism is flush with the prism support, wherein the elastically deformable material is biasly connected to the prism support.
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公开(公告)号：US11812336B2
公开(公告)日：2023-11-07
申请号：US16666841
申请日：2019-10-29
发明人： Gautam Nirula , Amol Kench
IPC分类号： H04W4/02 , G01S19/22 , G01S19/26 , G06V20/58 , H04N23/54 , H04N23/61 , H04N23/90 , G06V10/80 , G01S17/89
CPC分类号： H04W4/026 , G01S19/22 , G01S19/26 , G06V10/80 , G06V20/58 , H04N23/54 , H04N23/61 , H04N23/90 , G01S17/89
摘要： Techniques for improved GNSS positioning include leveraging approximate location information and information from sensors of a mobile device, and/or sensors communicatively coupled therewith, to detect obstructions and determine which SVs may be blocked from direct view. In particular, information from one or more cameras, LIDAR, radar, and/or other sensor systems can be used to determine how nearby obstructions may block the view of portions of the sky from the perspective of the mobile device, then compared with a SkyPlot of SVs based on the mobile device's approximate location to determine which SVs are likely blocked from view. A GNSS position determination of the mobile device can then be made by reducing the weight of information received from blocked (obstructed) SVs.
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公开(公告)号：US11736063B2
公开(公告)日：2023-08-22
申请号：US17703106
申请日：2022-03-24
申请人： VIASAT, INC.
摘要： Systems and methods are provided for compensating for mechanical acceleration at a reference oscillator. A reference oscillator provides an oscillator output signal and an accelerometer on a same platform as the reference oscillator, such that mechanical acceleration at the reference oscillator is detected at the accelerometer to produce a measured acceleration. A filter assembly, having an associated set of filter weights, receives the measured acceleration from the accelerometer and provides a tuning control signal responsive to the measured acceleration to a frequency reference associated with the system. An adaptive weighting component receives the oscillator output signal of the reference oscillator and an external signal that is provided from a source external to the platform and adjusts the set of filter weights for the filter assembly based on a comparison of the external signal and the oscillator output signal.
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公开(公告)号：US20230251088A1
公开(公告)日：2023-08-10
申请号：US18297474
申请日：2023-04-07
申请人： Javad GNSS, Inc.
发明人： Javad ASHJAEE
IPC分类号： G01C11/02 , G01C11/00 , G01C15/02 , G01S19/51 , G01S19/12 , G01S19/23 , G01S19/26 , G01S19/07
CPC分类号： G01C11/02 , G01C11/00 , G01C15/02 , G01S19/07 , G01S19/12 , G01S19/26 , G01S19/51 , G01S19/235
摘要： A method of calibrating a total station using a GNSS device includes physically coupling the total station with the GNSS device at a first location; determining the position of the total station at the first location based on position data received by the GNSS device; decoupling the total station from the GNSS device; moving the GNSS device to a second location while leaving the total station at the first location; determining the position of the GNSS device at the second location based on position data received by the GNSS device; adjusting the position of a camera on the total station to image the GNSS device while at the second location; determining axes of the camera based on the orientation of the camera and the determined positions at the first and second locations; and calibrating encoders of the total station based on the determined axes.
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87.发明公开公开(公告)号：US20230184959A1
公开(公告)日：2023-06-15
申请号：US17849742
申请日：2022-06-27
发明人： Wenfeng Li , Wenwen Zhang
CPC分类号： G01S19/246 , G01S19/11 , G01S19/26 , G06Q10/0833
摘要： Disclosed is a digital association and high precision positioning and tracking system for multimodal transport container, comprising a carrier terminal, a container terminal, and a remote digital monitoring platform; the carrier terminal is activated when the a container is in an associated state, and is used to collect high-precision positioning information and other status information of the container and send it to the remote digital monitoring platform; the container monitoring terminal is enabled when the container is in a non-associated state, and is used to collect container status information and send it to the remote digital monitoring platform; the remote digital monitoring platform is used to record and visualize relevant information; the carrier-container association and binding module sends instructions to the carrier terminal and the container monitoring terminal to complete the container-carrier association and unbinding, ensuring the security and positioning accuracy of the container during the multimodal transport process.
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公开(公告)号：US11474258B2
公开(公告)日：2022-10-18
申请号：US16823854
申请日：2020-03-19
摘要： A system is disclosed for determining a physical metric such as position. The system comprises a local signal generator (8) configured to provide a local signal and a receiver (4) configured to receive a signal having properties corresponding to those in a signal transmitted by a trusted remote source. An inertial measurement unit (12) is configured to provide a measured or assumed movement of the receiver. A correlator (6) is configured to provide a correlation signal by correlating the local signal with the received signal. A motion compensation unit (14) is configured to provide motion compensation of at least one of the local signal, the received signal, and the correlation signal based on the measured or assumed movement. A signal analysis unit (16) is configured to determine whether the received signal includes a component received in a direction that is different to a line-of-sight direction between the receiver and the trusted remote source, wherein the determination is based on the correlation signal. Finally, a metric determination unit or positioning unit (20) is configured to determine a physical metric associated with the receiver, such as its position, based on the determination made by the signal analysis unit (16).
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89.发明申请公开(公告)号：US20220312699A1
公开(公告)日：2022-10-06
申请号：US17646731
申请日：2022-01-03
摘要： This disclosure relates generally to root zone moisture estimation for vegetation cover using remote sensing. Conventionally, it is challenging to estimate root zone soil moisture using only satellite data. Moreover, estimation of soil moisture under vegetation cover based on bare surface soil moisture and vegetation parameters is not available. The disclosed method and system facilitate estimation of an ensemble of soil moisture under vegetation cover and root zone soil moisture using process based soil water balance for spatial estimation of root zone soil moisture. The system estimates bare surface soil moisture for different soil types/textures using the baseline bare surface model and soil properties derived from satellite data and in-situ sensors. The method further provides temporal spatially distributed soil moisture inputs to an intelligent irrigation management/information system which is very important to reduce and regulate water consumption.
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公开(公告)号：US20220268945A1
公开(公告)日：2022-08-25
申请号：US17674315
申请日：2022-02-17
申请人： RX NETWORKS INC.
摘要： A method of determining performance of GNSS prediction data includes receiving the GNSS prediction data at a server, the GNSS prediction data being associated with a unique identifier, determining performance metrics of the prediction data at a current time and saving the performance metrics of the prediction data in association with the unique identifier, and in response to receipt of a request from an electronic device, sending one or both of the performance metrics of the prediction data associated with the unique identifier and corrections for correcting the prediction data to the electronic device for use by the electronic device.
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