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A new method based on the second dimension of resemblance coefficient (Cr2 ) and the fourth dimension of wavelet packet transform (Wpt4) to improve the sorting correct rate of unknown radar emitter is presented in this paper. The Cr2 and Wpt4 is extracted firstly and used as the sorting basis when the unknown radar emitter signal is received, then the radar emitter sorting can be realized by the fuzzy...
Satellite tool kit (abbr. STK) is a professional space-analysis software widely used in all phases of a space systempsilas life cycle. The simulation of STK is efficient and accurate relatively. Sometimes STK can not run efficiently. Maybe some other software can be used to make up. The problem of how to integrate applications with STK is faced during program exploring. An approach for integrating...
Results of ocean surface wind speed retrieval from C-band ENVISAT ASAR images using a physics wind model are shown. The physics model is based on the radar backscatter theory in which the radar cross section is calculated considering the contribution of both Bragg scattering or resonance and specular reflection from the sea surface. The wind speeds retrieved from VV- or HH-polarized ASAR images using...
In distributed small satellites, the existence of the baseline error will affect the realization of the three functions: synthetic aperture radar imaging, ground moving target indication and altitude measure. A new 3-D baseline error estimation method for distributed small satellites is proposed in this paper. This method separates the along-track baseline and the cross-track baselines through image...
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