Signal Processing : Heritage


Passive radars use transmitters of opportunity as signal source and are necessarily bistatic. Passivity has many advantages: Built-in redundancy since any transmitter (subject to central frequency and bandwidth requirements) can be used as source; By exploiting several transmitters of opportunity, it is feasible to increase the revisit rate of a particular area; Lower cost than an active system since there is no need for a transmitter. Moreover since no signal is transmitted, there is no need for acquiring a license or obey transmit power regulations. 

The MUSAR project was carried out in collaboration with the Royal Military Academy. The contribution of CSL was to provide a demonstrator of frequency-domain passive bistatic SAR processor. This processor was tested on both simulated (point target responses) and real (ENVISAT) raw data.

The final report was delivered in December 2011 and the final presentation took place at RMA premises in February 2012.



WIMCA is an ESA project for which we are Sub-Contractor to the University of Bari. The objective is to study, experiment and validate a new radar interferometry technique that exploits the wide-band capabilities offerred by the new-generation SAR sensors (e.g., TerraSAR-X). As a sample illustration of the results, the figure hereunder shows a 3D view of an interferometric digital terrain model, generated by the new technique from TerraSAR-X images, over the region of Uluru in Australia. An aerial view of the same site is also shown for comparison purposes.

The project was completed in 2011. An extension on ship detection was carried out in 2012.

 wimca 1


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Contact(s) : Anne Orban