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METHOD AND SYSTEM FOR DETECTING USEFUL SIGNALS, WITH RESPECTIVE NON-NEGLIGIBLE FREQUENCY DRIFT, IN A TOTAL SIGNAL

机译:在总信号中使用特定的,不可忽略的频率漂移检测有用信号的方法和系统

摘要

A method for detecting a plurality of useful signals in a total signal. The useful signals correspond to radiofrequency signals emitted by different terminals in a multiplexing frequency band. A plurality of spectrograms calculated that have a compensated linear frequency drift and are respectively associated with different linear frequency drift values. For each analysis frequency and each spectrogram, time envelope filtering of the values is performed at the different times for analyzing the spectrogram at the analysis frequency using a filter representing a reference time envelope of the useful signals. A useful signal is detected at an analysis time and at an analysis frequency in response to a verification of a predefined detection criterion by the value from a spectrogram resulting from filtering at the analysis time and at the analysis frequency.
机译:一种用于检测总信号中的多个有用信号的方法。有用信号对应于在复用频带中由不同终端发射的射频信号。所计算的多个频谱图具有补偿的线性频率漂移并且分别与不同的线性频率漂移值相关联。对于每个分析频率和每个频谱图,在不同的时间执行值的时间包络过滤,以使用代表有用信号的参考时间包络的滤波器在分析频率下分析频谱图。响应于预定义的检测标准的验证,在分析时间和分析频率处检测有用信号,该频谱信号来自在分析时间和分析频率处进行滤波得到的频谱图值。

著录项

  • 公开/公告号EP3259606B1

    专利类型

  • 公开/公告日2018-12-26

    原文格式PDF

  • 申请/专利权人 AIRBUS DEFENCE AND SPACE SAS;

    申请/专利号EP20160707910

  • 发明设计人 PICARD MATHIEU;ANTEUR MEHDI;

    申请日2016-02-12

  • 分类号G01R23/167;H04J1/12;H04B17/309;

  • 国家 EP

  • 入库时间 2022-08-21 12:29:01

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