一、問題的提出雷达在捕获(指定的或未知的)目标的过程中,总是在一定的空域范围內进行搜索。当目标落入雷达的分辨单元(或者说雷达分辨单元搜索到目标)并且其回波能量超过检测门限时,我们称目标被“截获”。这种过程称之为雷达对目标的搜索截获过程,实现这种过程的方法,称之为雷达的搜索方式。一般地说,在对付诸如飞机一类慢速目标的雷达中,用什么方式去搜索和捕获目标的问題并不那么至关重要,因而在设计和使用中通常都不去特別地研究和试验搜索截获 I. PROBLEM PROBLEM RADAR In the process of capturing (specified or unknown) targets, the search is always carried out within a certain airspace. When the target falls into the radar’s resolving unit (or the radar resolving unit searches for the target) and its echo energy exceeds the detection threshold, we call the target “intercepted”. This process is called radar target acquisition and interception process, the realization of this process method, called the radar search. In general, the issue of how to search for and capture a target in a radar that deals with slow targets such as airplanes is less critical and is therefore not typically studied or experimentally searched for in design and use Intercepted