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This paper examines the performance of compact polarimetry (CP) for ship detection. An improved polarimetric information reconstruction algorithm is proposed based on a modified four-component model-based decomposition. The helix scattering component is considered in the reconstruction procedure to deal with the case when reflection symmetry condition does not hold. Then various ship detection algorithms...
This article describes research carried out in the area of mobile spatial interaction (MSI) and the development of a 3D mobile version of a 2D web‐based directional query processor. The TellMe application integrates location (from GPS, GSM, WiFi) and orientation (from magnetometer/accelerometer) sensor technologies into an enhanced spatial query processing module capable of exploiting a mobile device's...
In this paper, a new method for supervised classification of terrain types in polarimetric Synthetic Aperture Radar (Pol-SAR) images is proposed. This technique is a combination of the texture classification and the maximum likelihood classification based on the complex Wishart distribution for the polarimetric covariance matrix. The texture features are first extracted from the span image based on...
A wide frequency band two-way rotary joint (in the same frequency band) is described. Its VSWR is less than 1.3 over the frequency range from 0.7 GHz to 1.4GHz, its insert loss is less than 0.50dB, its isolation is better than 40dB. The rotary joint uses two symmetic excitation points and muff structure, and its length is shorter than λ. The structure is simple. Its fabrication and adjustment are...
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