Title :
A Fast BAVQ Algorithm For SAR Raw Data Compression
Author :
Ting, Li ; Dongjin, Wang ; Falin, Liu
Author_Institution :
Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei
Abstract :
In this paper, a fast BAVQ algorithm in SAR raw data compression is proposed. First, to reduce the data dynamic range, block adaptive quantization of raw data is implemented and the sign bit of raw data is coded separately. And then, VQ is applied in the absolute value of the raw data. The result of experiments shows that the complexity of VQ has been greatly reduced and the process of searching codebook can be simplified
Keywords :
radar signal processing; synthetic aperture radar; vector quantisation; BAVQ; SAR; block-adaptive vector quantization algorithm; codebook searching; raw data compression; synthetic aperture radar; Code standards; Costs; Data compression; Dynamic range; Encoding; Gaussian distribution; Image coding; Synthetic aperture radar; Table lookup; Vector quantization; Block Adaptive Vector Quantization; Raw Data Compression; Synthetic Aperture Radar;
Conference_Titel :
Radar, 2006. CIE '06. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9582-4
Electronic_ISBN :
0-7803-9583-2
DOI :
10.1109/ICR.2006.343339
