摘要
星载合成孔径雷达因其全天候、全天时的侦察性能,倍受军事和民事应用关注,目前高分辨率宽观测带SAR是星载合成孔径雷达研究的热点问题,在需要进行全球大范围动态监视或高重访周期观测的局部热点地区的应用中都希望能够采用高分辨率宽观测带成像。在讨论多种用于实现宽观测带SAR的系统技术的基础上,提出一种基于方位向多波束和距离向波束扫描方法的高分辨率宽观测带星载SAR系统设计方法,并结合一个设计实例,详细分析系统性能和设计时应注意的若干问题。
Due to its all-weather, day and night imaging capability, spaceborne SAR is becoming a focus in military and civil applications. Currently, the research of high-resolution wide-swath（HRWS） SAR is a hot spot, which is required by global dynamic supervision or periodical observation of local area. In the pa- per, some HRWS technologies are discussed. Then, a new method for designing HRWS SAR system based on azimuth multi-beam and elevation beam scan is proposed. By an example, the system performance is ana- lyzed, and some attentions in design are given.
出处
《雷达科学与技术》
2013年第2期130-135,140,共7页
Radar Science and Technology
基金
国家863计划(No.2009AA12Z104)
关键词
星载合成孔径雷达
高分辨率宽观测带
方位向多波束
距离向扫描
spaceborne synthetic aperture radar（SAR）
high-resolution wide-swath（HRWS）
multipleazimuth beam
elevation beam scan
