This paper addresses the impact of limited oscillator stability in bi- and multistatic SAR. Oscillator noise deserves special attention in distributed SAR systems, since there is no cancellation of low frequency phase errors as in a monostatic SAR, where the same oscillator signal is used for modulation and demodulation. We show that uncompensated phase noise may cause a time variant shift, spurious sidelobes, and a widening of the impulse response, as well as a low frequency phase modulation of the focused SAR signal. Quantitative estimates are derived analytically for each of these errors based on a systems theoretic model taking into account the second-order statistics of the oscillator phase noise.
Impact of Oscillator Noise in Bistatic and Multistatic SAR
2005 ; Seoul, Korea
IEEE Geoscience and Remote Sensing Symposium (IGARSS) ; 2 ; 1043-1046
2005-07-01
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
phase noise , multistatic , interferometry , SAR , bistatic , synchronisation , stochastic process , ISLR
Impact of Oscillator Noise in Bistatic and Multistatic SAR
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