摘要
从美国发射第一颗星载SAR卫星Seasat开始,雷达成像受到了许多国家的高度关注,日益成为竞争激烈、发展迅速的技术领域。随着侦察系统的逐步完善,星载SAR成像已从低分辨率、单极化、工作模式单一向高分辨率、多极化、多工作模式发展。作为一种有效的空对地观测工具,星载SAR卫星能够提供远距离、全天时全天候条件下的探测活动,具备一定的穿透能力,在民用和军事领域正发挥着无可替代的作用。
Since the fi rst spaceborne SAR（American Seasat） was launched in 1978, many countries was starting to pay attention to radar imaging, which has become a new technical fi eld with fi erce competition and rapid development. In virtue of the gradual improvement of reconnaissance system, spaceborne SAR sensor has developed from low resolution, single polarization and standard mode to high resolution, multi-polarization and multi-mode. As an effective sensor from air to ground, spaceborne SAR has the ability of remote detection and penetration in almost all-day, all-weather conditions. Now it is playing a unique role in civilian and military areas.
出处
《国防科技》
2016年第1期19-24,共6页
National Defense Technology
关键词
航天侦察
合成孔径雷达
星载SAR
高分辨率
spacecraft reconnaissance
Synthetic Aperture Radar（SAR）
spaceborne SAR
high resolution
