摘要
星载遥感微波成像雷达的观测区域广阔，图像分辨精度高。所以，星载遥感微波成像雷达具有数据率高、数据量大的特点。这就对遥感数据的传输和存储提出了较高的要求。本文提出采取数据压缩方法，在不降低测绘带宽和测绘精度条件下，降低遥感雷达数据率和数据量，从而降低对数据链和星上数据存储设备的要求。本文还对遥感雷达原始数据压缩和遥感雷达图像数据压缩优缺点进行了比较，提出了采用遥感原始数据压缩的建议。最后。
Synthetic aperture radar on satallite board produces high bit flow and large amount data.The compression of data will benefit both the data communication and data storage.In this paper the SAR system model and the SAR raw data signal statical model are analysized and setupped.We also discussed why the SAR raw data but not image data should be compressed.At last some typical SAR raw data compression methods are introduced.These metods will compress SAR raw data with some loss of information but not degrade SAR′ s range and azimuth resolution.
出处
《电讯技术》
北大核心
1996年第6期7-13,共7页
Telecommunication Engineering
关键词
合成孔径雷达
信源编码
数据压缩
量化
Synthetic Aperture Radar,Source Code,Data Compression,Quantization
