The TechSat21 space-based radar employs a cluster of free-floating satellites, each of which transmits its own orthogonal signal and receives all reflected signals. The satellites operate coherently at X-band. The cluster forms essentially a multi-element interferometer with a concomitant large number of grating lobes and significant ground clutter. A novel technique for pattern synthesis in angle-frequency space is proposed, which exploits the double periodicities of the grating lobes in the angular domain and of the radar pulses in the frequency domain, and allows substantial gains in clutter suppression. Gains from 7 to 17 dB relative to the normal random, sparse array appear feasible.
Pattern synthesis for TechSat21-a distributed spacebased radar system
2001 IEEE Aerospace Conference Proceedings (Cat. No.01TH8542) ; 2 ; 2/725-2/732 vol.2
2001-01-01
836712 byte
Conference paper
Electronic Resource
English
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