Practical Beam Broadening for Space-borne SAR Using Phase-Only Pattern Synthesis
This paper describes methods for broadening the beam of space-borne SAR using phase-only element weights. This type of broadening can be valuable for expand either the irradiating swath in elevation or the effectual synthesis aperture length in azimuth of space-borne SAR. Phase-only broadening is required for typical solid-state (active phased) arrays because control of the transmit amplitude suffer to either complex control or energy losing. In this paper, a new array pattern synthesis algorithm using the two-step least-squares method is proposed, this new method utilizes the randomness of the desired pattern phase to design an array pattern. The numerical simulation results are presented to illustrate this algorithm.
pattern synthesis beam broadening space-borne SAR two-step least-squares method
Zeng Xiangneng Zhang Yongshun He Feng Dong zhen
Missile Institute Air Force Engineering University Shaanxi, Sanyuan, China, School of Electronic Engineering and Science National Univ. of Defense Tech. Changsha, China School of Electronic Engineering and Science National Univ. Of Defense Tech.Changsha, China
国际会议
南京
英文
1-4
2011-11-09（万方平台首次上网日期，不代表论文的发表时间）