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.
李振强, 黄振, 陈曦, 葛宁. 微纳卫星编队的欠采样传输无源定位方法[J]. 清华大学学报（自然科学版）, 2016, 56(6): 650-655.
LI Zhenqiang, HUANG Zhen, CHEN Xi, GE Ning. Passive location method based on sub-sampling transmissions in micro/nano-satellite. Journal of Tsinghua University(Science and Technology), 2016, 56(6): 650-655.
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