This paper investigates the feasibility of Galileo navigation satellites as transmitters of opportunity in passive bistatic synthetic aperture radar (SAR) systems from the perspectives of signal processing and experiment program. Experimental images obtained using a single Galileo channel, E5a or E5b, are presented and analyzed. The paper also puts forward the channel combination scheme to jointly process E5a and E5b channels, which brings up high-resolution possibilities for passive SAR technique. By employing the entire E5 band for imaging, the range resolution may be potentially increased by up to 5 times. Preliminary experimental results for this concept are demonstrated.
- bistatic synthetic aperture radar (BSAR)
- E5 channel combination
- GNSS-based SAR
ASJC Scopus subject areas
- Computer Science(all)