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In this paper, an efficient geography registration method for INSAR coherent change detection is proposed. In the algorithm, considering Terra-SAR image, firstly we do geography registration on two images by oversampling the geography information in master image, then do coarse and fine registration. In coarse registration, find the range and azimuth shifts by calculating the cross correlation of...
In radio navigation system working on medium-short wave band, serious multipath interference and atmosphere noise make the precision of code tracking loop decrease. In order to improve the positioning precision, carrier phase measurement is generally adopted, but carrier ambiguity resolution is a key problem. Based on the analysis of multipath error of code tracking loop, a carrier ambiguity resolution...
The technology of spectrum signal tracking and demodulation not only involves the designs of complex high-speed digital circuits, but also includes the designs of tracking algorithm. In the traditional design, the designers usually adopt the design methods based on FPGA&DSP to achieve all the above contents, which means that the carrier-DCO, code-DCO, the circuits of correlation and integral can...
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