作者
Yuqi Wang, Guang-cai Sun, Mengdao Xing, Jixiang Xiang, Zijing Zhang, Liang Guo
发表日期
2020/9/26
研讨会论文
IGARSS 2020-2020 IEEE International Geoscience and Remote Sensing Symposium
页码范围
928-931
出版商
IEEE
简介
A long synthetic aperture passive localization method for two Frequency shift keying (2FSK) signal via azimuth chirp-rate contour is proposed in this paper. By introducing synthetic aperture radar (SAR) imaging technology into passive localization, Doppler frequency change rate of received signal, which is called as azimuth chirp-rate in this paper, is estimated by azimuth focusing. Then, a grid map is formed on the ground and azimuth chirp-rate of each point is calculated to get an azimuth chirp-rate contour map. In the contour map, signal emitter is located in an azimuth chirp-rate curve in which the azimuth chirp-rate value is equal to its estimate. The azimuth chirp-rate contour map of a ground area varies with position of sensor. Therefore, two different azimuth chirp-rate curves can be obtained through different periods of a trajectory and the intersection of the two curves gives estimate of the emitter location.
引用总数
学术搜索中的文章
Y Wang, G Sun, M Xing, J Xiang, Z Zhang, L Guo - IGARSS 2020-2020 IEEE International Geoscience …, 2020