A method of bandwidth widening using multi direct digital synthesizer for SAR

被引：0
|
作者：
Kim, Kyeongrok [1 ]
Sumantyo, Josaphat Tetuko Sri [2 ]
Widodo, Joko [2 ]
Kim, Jae-Hyun [1 ]
机构：
[1] Ajou Univ, Dept Elect & Comp Engn, Suwon 16499, South Korea
[2] Chiba Univ, Ctr Environm Remote Sensing, Chiba, Japan
来源：
11TH INTERNATIONAL CONFERENCE ON ICT CONVERGENCE: DATA, NETWORK, AND AI IN THE AGE OF UNTACT (ICTC 2020) | 2020年
关键词：
Synthetic aperture radar (SAR); wideband; chirp; multi-DDS; simulink; TUTORIAL;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Resolution of synthetic aperture radar is divided into two-dimensional space: Azimuth and range resolution. The range resolution is determined by the bandwidth of signal. Conventional synthetic aperture radar system uses multiplier to expand the bandwidth, however, the distortion in spectrum also are expanded. In this paper, the method for bandwidth widening using multi direct digital synthesizer blocks is designed and compared. We formulate signal parameters to widen bandwidth without multiplier. In addition, we confirm the wide bandwidth while maintaining minimal system clock. However, the number of blocks is not proportional to the signal quality. We derive the optimal number of blocks considering by the cost effectiveness and the signal quality.
引用
收藏
页码：179 / 181
页数：3
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