TY - GEN
T1 - Segmented BAQ algorithm for SAR raw data of strong target in weak background
AU - Zhang, Haojie
AU - Chen, Jie
AU - Li, Jingwen
AU - Zeng, Hongcheng
AU - Yang, Wei
PY - 2013
Y1 - 2013
N2 - In order to improve the performance of block adaptive quantization (BAQ) when dynamic range of the Synthetic Aperture Radar (SAR) echo is far larger than the radar receiver's, this paper proposes a segmented BAQ algorithm for SAR raw data of strong target in weak background. Firstly, unlike traditional ADC processing, the 12-bit ADC system is used before BAQ. The quantization and saturation error of 12-bit ADC system is analyzed. Moreover, the mapping relationship between standard deviation of output signal (SDOS) of the ADC and the average signal magnitude (ASM) for 12-bit ADC is deduced. Secondly, the concept of the segmented compression is proposed and a segmented non-uniform scalar quantizer for SAR raw data of strong target in weak background is designed. Thirdly, the encoding scheme is provided. Experiment results based on simulated data show that the performance of the proposed algorithm is better than that of traditional BAQ.
AB - In order to improve the performance of block adaptive quantization (BAQ) when dynamic range of the Synthetic Aperture Radar (SAR) echo is far larger than the radar receiver's, this paper proposes a segmented BAQ algorithm for SAR raw data of strong target in weak background. Firstly, unlike traditional ADC processing, the 12-bit ADC system is used before BAQ. The quantization and saturation error of 12-bit ADC system is analyzed. Moreover, the mapping relationship between standard deviation of output signal (SDOS) of the ADC and the average signal magnitude (ASM) for 12-bit ADC is deduced. Secondly, the concept of the segmented compression is proposed and a segmented non-uniform scalar quantizer for SAR raw data of strong target in weak background is designed. Thirdly, the encoding scheme is provided. Experiment results based on simulated data show that the performance of the proposed algorithm is better than that of traditional BAQ.
UR - https://www.scopus.com/pages/publications/84894180307
M3 - 会议稿件
AN - SCOPUS:84894180307
SN - 9784885522789
T3 - Conference Proceedings of 2013 Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2013
SP - 470
EP - 472
BT - Conference Proceedings of 2013 Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2013
T2 - 2013 4th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2013
Y2 - 23 September 2013 through 27 September 2013
ER -