Interferometric Orbit Determination System for Geosynchronous SAR Missions: Experimental Proof of Concept

Interferometric Missions Using Small Sat Sar Satellites

The Canadian Space Agency (CSA) is currently involved in the development of active membrane antenna technology for SAR applications. To qualify this new technology, it is proposed to develop a small satellite L-band SAR demonstrator. Such a demonstrator could be placed on the same orbit than the ALOS satellite for a tandem interferometric mission. The paper describes the initial science objecti...

A Role for Improved Angular Observations in Geosynchronous Orbit Determination

A Generalized Chirp-Scaling Algorithm for Geosynchronous Orbit SAR Staring Observations

Geosynchronous Orbit Synthetic Aperture Radar (GEO SAR) has recently received increasing attention due to its ability of performing staring observations of ground targets. However, GEO SAR staring observation has an ultra-long integration time that conventional frequency domain algorithms cannot handle because of the inaccurately assumed slant range model and existing azimuth aliasing. To overc...

Passive geosynchronous SAR system reusing backscattered digital audio broadcasting signals

A synthetic aperture radar is considered, located on a geosynchronous receiver and illuminated by the backscattered energy of satellite broadcast digital audio or television signals. The principal application of such a passive system could be differential interferometry, since even low spatial resolution coupled to zero baseline would be useful; however, other imaging applications could be envi...

Sub-aperture Focusing Algorithm of Geosynchronous Sar

Synthetic Aperture Radar (SAR) on the geosynchronous orbit has the advantage in remote sensing, with high resolution to provide a large coverage in a short visit time. the space-variant coverage and range-azimuth couple of GEO SAR are required to compensate, using the electrical beam steering, the irregular data acquisition can be convert to classical SAR modes, such as stripmap, spotlight, sli...