Title :
Signal Processing Algorithm of Spaceborne SIMO HF-SAR for Three-Dimensional Topside Ionosphere Exploration
Author :
Chen, Jie ; Li, Zhuo ; Li, ChunSheng ; Zhou, Yinqing
Author_Institution :
Sch. of Electron. & Inf. Eng., BeiHang Univ., Beijing, China
Abstract :
Ionosphere exploration is very important to improve the performance of space information systems, e.g. satellite navigation. A novel of spaceborne nadir-looking single input and multiple output (SIMO) HF-SAR is investigated, which has the capability to generate three-dimensional radar image for the topside ionospheric irregularities. The three-dimensional radar echo signal modeling is developed. The image formation algorithm for the antenna array typed SIMO HF-SAR system is proposed, based on modification of extend chirp scaling (ECS) algorithm. Computer simulation results illustrate the feasibility of new radar system and the validation of the signal processing algorithm. It has very good potential to be applied to the new generation ionospheric explorer developed in the future.
Keywords :
HF antennas; antenna arrays; geophysical signal processing; ionosphere; radar antennas; radar imaging; spaceborne radar; synthetic aperture radar; 3D radar echo signal modeling; 3D radar image; ECS algorithm; antenna array; computer simulation; extend chirp scaling algorithm; image formation algorithm; nadir-looking single-input multiple-output HF-SAR; satellite navigation; signal processing algorithm; space information systems; spaceborne SIMO HF-SAR; synthetic aperture radar; three-dimensional topside ionosphere exploration; Antenna arrays; Chirp; Image generation; Information systems; Ionosphere; Radar antennas; Radar imaging; Satellite navigation systems; Signal processing algorithms; Spaceborne radar;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5301621
