Passive location method based on sub-sampling transmissions in micro/nano-satellite

doi:10.16511/j.cnki.qhdxxb.2016.22.027

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Abstract In time difference of arrival (TDOA)/frequency difference of arrival (FDOA) passive location systems used in micro/ nano-satellite formations, improving the location accuracy usually requires a large increase in data transmissions, which severely reduces the system efficiency due to the narrow data link bandwidth of the satellites. A TDOA/FDOA estimation method is developed based on sub-sampling transmissions without increasing the data transmissions, which significantly improves the FDOA accuracy by a time expansion while maintaining the TDOA estimation accuracy. The TDOA accuracy is analyzed and the maximum sub-sampling rate is derived. Simulations show that for wideband signals, the location accuracy of this method is improved more than 6 fold over that of the compressed sensing method for the same data transmission.

Keywords passive location time difference of arrival (TDOA) frequency difference of arrival (FDOA) sub-sampling compress sensing (CS)

ZTFLH:

TN959.1

Issue Date: 15 June 2016

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	LI Zhenqiang
	HUANG Zhen
	CHEN Xi
	GE Ning

Cite this article:

LI Zhenqiang,HUANG Zhen,CHEN Xi, et al. Passive location method based on sub-sampling transmissions in micro/nano-satellite[J]. Journal of Tsinghua University(Science and Technology), 2016, 56(6): 650-655.

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http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2016.22.027 OR http://jst.tsinghuajournals.com/EN/Y2016/V56/I6/650

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