Improved BAQ algorithm for Tiangong-2 interferometric imaging radar data compression

doi:10.1049/joe.2019.0140

	Improved BAQ algorithm for Tiangong-2 interferometric imaging radar data compression
	Shi, Xiaojin 2; Zhang, Yunhua 1,2; Dong, Xiao 2
	2019
会议日期	October 17, 2018 - October 19, 2018
会议地点	Nanjing City, China
卷号	2019
期号	19
DOI	10.1049/joe.2019.0140
页码	5785-5788
英文摘要	Tiangong-2 interferometric imaging radar altimeter (InIRA), the first space-borne radar altimeter in the world, applying a new mechanism of interferometry with short baseline and small incident angle, can achieve wide swath and high accuracy sea surface height measuring. Comparing to traditional altimeter, InIRA can obtain SAR image of observation area, which means InIRA needs higher AD sampling rate. Due to the limitation of satellite on-board storage and downlink speed, in order to extend the working time of InIRA, data compression algorithm for InIRA must be studied. Block adaptive quantisation (BAQ) is an efficient and widely adopted approach for space-borne SAR raw data compression. Based on the characters of InIRA echo waveform, this study discusses compressing InIRA raw data by changing quantisation bits and size of blocks of BAQ algorithm to achieve higher compression ratio and less sea surface height error. © 2019 Institution of Engineering and Technology. All rights reserved.
会议录	Journal of Engineering
语种	英语
内容类型	会议论文
源URL	[http://ir.nssc.ac.cn/handle/122/7167]
专题	国家空间科学中心_微波遥感部
作者单位	1.University of Chinese Academy of Sciences, 19 A Yuquan Rd, Shijingshan, Beijing; 100049, China 2.CAS Key Laboratory of Microwave Remote Sensing, National Space Science Centre, Chinese Academy of Sciences, No. 1 Nanertiao Zhongguancun, Haidian, Beijing; 100190, China;
推荐引用方式 GB/T 7714	Shi, Xiaojin,Zhang, Yunhua,Dong, Xiao. Improved BAQ algorithm for Tiangong-2 interferometric imaging radar data compression[C]. 见:. Nanjing City, China. October 17, 2018 - October 19, 2018.