Analysis of interferometric signals based on coherence and power spectral density

It the paper of Holzner and Bamler (2002) it was proven that two interferometric burst-processing options are equivalent. In order to address this question interferogram sample coherence and power spectral density were applied. This paper proposes to use this two expectation values as a general instrument to explore various SAR modes and their interferometric signal properties. Moreover, this method is a way to represent and investigate the behavior of the interferometric signals in a unified and concise way. In turn, this approach will help to design new algorithms for SAR interferometry. Burst-mode interferometry serves as an example. All the known properties of interferometric burst-mode signals - for the cases of non-zero fringe frequency, burst pattern misalignment, and misregistration - can be inferred very easily. In order to amplify the spectral behavior of interferometric burst-mode signals the results are contrasted/referenced to the ones obtained for strip-map interferometry. On this basis, the expectations for spotlight interferometry can be predicted and discussed.