| 摘要: |
| 针对弹载SAR成像实时性高、非匀直弹道下成像算法、运动补偿困难，难以工程实现
的现状，提出了一种末制导阶段在恒定高度采用直线斜飞弹道的SAR成像制导模式。详细分
析了该模式的工作过程、极坐标格式SAR聚束成像算法及直线斜飞弹道对制导性能产生的影
响。仿真结果表明，该模式在增加少量制导时间的代价下，借鉴机载聚束SAR成像算法即能
获得高质量的SAR图像，为SAR末制导的工程化提供了有益借鉴。 |
| 关键词: 弹载SAR 聚束成像 末制导 极坐标格式算法 |
| DOI： |
|
| 基金项目:山东省“泰山学者”建设工程项目 |
|
| A missile-borne SAR image scheme based on linear slant trajectory |
| ZHANG Gang,ZHU Ming-bo,ZHAO Zhen-bo,LI Xiang-ping |
| () |
| Abstract: |
| For the difficulties in realizing synthetic aperture radar(SAR) terminal guidanc
e, such as high
real-time, imaging algorithms under non-uniform straight trajectory and motion
compensation, a SAR terminal guidance mode is proposed, where the missile flies
in a straight squint trajectory at constant hight.The working process polar form
at
SAR spotlight imaging algorithm and effect of straight slant trajectory on guid
ance performance are ana
lysed in detail. Simulation results show that this working mode can obtain high-
re
solution image refering to space spotlight SAR image algorithm in the price of a
dding little guidance time and it gives a meaningful reference in realizing SA
R terminal guidance. |
| Key words: missile-borne SAR spotlight imaging terminal guidance polar format algorithm |
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