研究目的
To study the influence of the double-bounce contribution in the estimation of scene parameters (ground topography and vegetation height) in bistatic acquisitions, specifically using TanDEM-X data over rice fields.
研究成果
The inclusion of the double-bounce decorrelation term complicates the inversion of the RVoG model but is not always necessary as the retrieved values are not significantly different from the actual ones. The error becomes noticeable only for incidence angles shallower than 30 degrees and large products of vertical wavenumber and vegetation height.
研究不足
The study is limited to rice fields and specific system configurations of TanDEM-X during its science phase. The influence of the double-bounce decorrelation term may vary in other scenarios or with different system parameters.
