天基雷达的关键技术

Key Technology of Space-Based Radar

已有和将要有的天基雷达有三种类型:类型Ⅰ是较小的,作用距离较近的交会雷达,已用于阿波罗和双子星座计划;类型Ⅱ是用于地球和行星测绘的资源雷达,已用于SEASAT和GEOSC等卫星上;类型Ⅲ是监视雷达,它的任务是监视大的范围,并探测和跟踪多目标,是研制中的天基雷达。本文首先讨论三种类型的天基雷达,然后介绍天基监视雷达的技术特点和有关的几个概念,最后叙述天基监视雷达的设计技术。

So far, there have been three types of radars based in space, including the exsiting type and the developing one. Among them, the type I of space-based radar（SBR） is a small and short-range rendezvous radar, such as the radars used on the Apollo and Gemini programs. The type II SBR is the earth planetary resource radar which can be used for mapping, such as those used on the SEASAT, GEOSC etc. The type Ill SBR is surveillance radar to accomplish the surveillance of large areas, as well as the detection and tracking of multi targets. The type III SBR is still in development. Firstly, the three types of SBR are discussed in detail. Then, the technical features and some relevant concepts about the type III SBR are introduced. Final- ly, the design technique of the type III SBR is also described.