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102 条记录 (耗时 0.023 秒)

    PRESERVING POSITIONING ACCURACY WITH AGE OF DATA
    2.
    发明公开
    PRESERVING POSITIONING ACCURACY WITH AGE OF DATA 审中-实审

    公开(公告)号：EP4421531A1

    公开(公告)日：2024-08-28

    申请号：EP24157022.5

    申请日：2024-02-12

    申请人： Raytheon Company

    发明人： IMHOFF, Scott Allen ,  TETER, Marcus Alton ,  CODY, Mac Allen ,  RICHARDSON, James J.

    IPC分类号： G01S19/02

    CPC分类号： G01S19/02

    摘要： Embodiments regard improved satellite position determination with age of measurement data. A method includes receiving measurement data from a satellite, in a first iteration, increasing a dimensionality of the measurement data to a specified number of dimensions resulting in N-dimensional input data, performing dynamic mode decomposition on the N-dimensional measurement data resulting in a Koopman operator and modes of the N-dimensional measurement data, adaptive filtering a time domain residue resulting in a filtered residue, and updating, based on the filtered residue and a time domain deterministic component of the N-dimensional measurement data, a state vector of an object associated with the satellite measurement data.

    NEAR-REAL TIME EIRP MONITORING DEVICE/SYSTEM
    8.
    发明公开
    NEAR-REAL TIME EIRP MONITORING DEVICE/SYSTEM 审中-公开

    公开(公告)号：EP3392677A1

    公开(公告)日：2018-10-24

    申请号：EP17166835.3

    申请日：2017-04-18

    申请人： Airbus Defence and Space GmbH

    发明人： GÖTZELMANN, Martin ,  SÖLLNER, Matthias ,  SCHUPP, Joachim ,  KIRCHNER, Michael

    IPC分类号： G01S19/02 ,  H04B7/185

    CPC分类号： H04B7/18513 ,  G01S19/02 ,  G01S19/39 ,  H04B7/18523 ,  H04B7/18543 ,  H04W72/0473 ,  H04W84/06

    摘要： A method for detection of an Equivalent Isotropically Radiated Power (EIRP) degradation of a radio frequency (RF) transmitter of a satellite being in an orbit with a repeating ground track is provided. The method comprises obtaining sets of signal-to-noise (C/N 0 ) data from a first source and obtaining satellite orbit data of the satellite from a second source. Each set of C/N 0 data is associated with the satellite and a respective one of a plurality of receivers. The method further comprises computingtemporal information on an elevational and azimuthal direction of the satellite with respect to respective locations of each of the plurality of receivers based on the satellite orbit data and the respective locations of each of the plurality of receivers. The method further comprises determining a time interval based on the temporal information. The repeating ground track repeats a single time in the time interval. The method further comprises determining, for each of the plurality of receivers, a respective one of a first plurality of differences between a first value of the respective set of C/N 0 data corresponding to a first time point and a second value of the respective set of C/N 0 data corresponding to a second time point. The first and second time points are apart by the time interval. The method further comprises computing a first average of the first plurality of differences. The method further comprises comparing the computed first average with a predetermined threshold. The method further comprises triggering a signal, when the computed first average is larger than the predetermined threshold. The signal indicates detection of the EIRP degradation of the transmitter. Further a monitoring device for detection of an Equivalent Isotropically Radiated Power (EIRP) degradation of a radio frequency (RF) transmitter of a satellite is provided.

    POWER ADJUSTMENT FOR CODE SIGNALS
    9.
    发明公开
    POWER ADJUSTMENT FOR CODE SIGNALS 审中-公开
    代码信号的功率调整

    公开(公告)号：EP3255459A1

    公开(公告)日：2017-12-13

    申请号：EP17171084.1

    申请日：2017-05-15

    申请人： The Boeing Company

    发明人： HO, Antony ,  CAREY, Robert A

    IPC分类号： G01S19/00 ,  G01S19/02

    CPC分类号： G01S19/34 ,  G01S19/02 ,  G01S19/32

    摘要： Systems, methods, and apparatus for power adjustment for code signals (Code A, Code B) are disclosed. In one or more embodiments, a disclosed method for adjusting power for code signals comprises determining, by at least one processor, a code loss for the transmission of the code signals by using a symbol table. The method further comprises determining, by at least one processor, an amount of change in attenuation for at least one adjustable attenuator on at least one vehicle by using the code loss. Further, the method comprises adjusting an attenuation, for at least one adjustable attenuator, by the amount of change in attenuation.

    摘要翻译： 公开了用于代码信号（代码A，代码B）的功率调整的系统，方法和装置。 在一个或多个实施例中，用于调整代码信号的功率的公开方法包括通过至少一个处理器通过使用符号表来确定代码信号的传输的代码损失。 该方法还包括通过至少一个处理器通过使用代码损失来确定至少一个车辆上的至少一个可调节衰减器的衰减量的变化量。 此外，该方法包括对于至少一个可调衰减器，通过衰减量的变化量来调整衰减。