摘要
在通常的块自适应矢量量化的基础上,对其进行了改进。首先对原始数据进行块自适应量化,并将其符号位提取出来单独编码,从而大幅度缩小了数据的动态范围,然后对块自适应量化后的数据进行矢量量化编码。实验结果证明,该算法可以降低矢量量化的复杂度。
In this paper, an improved 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 data. The result of experiments shows that the complexity of VQ has been greatly reduced.
出处
《现代雷达》
CSCD
北大核心
2007年第9期42-43,共2页
Modern Radar
关键词
合成孔径雷达
块自适应矢量量化
原始数据压缩
synthetic aperture radar
block adaptive vector quantization
raw data compression
