High resolution time of arrival estimation for a cooperative sensor system

[摘要] Distance resolution of cooperative sensors is limited by the signalbandwidth. For the transmission mainly lower frequency bands are used whichare more narrowband than classical radar frequencies. To compensate thisresolution problem the combination of a pseudo-noise coded pulse compressionsystem with superresolution time of arrival estimation is proposed. Codedpulsecompression allows secure and fast distance measurement in multi-userscenarios which can easily be adapted for data transmission purposes(Morhart and Biebl, 2009). Due to the lack of available signal bandwidth themeasurement accuracy degrades especially in multipath scenarios.Superresolution time of arrival algorithms can improve this behaviour byestimating the channel impulse response out of a band-limited channel view.For the given test system the implementation of a MUSIC algorithm permitted atwo times better distance resolution as the standard pulse compression.

[学科分类] 电子、光学、磁材料