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一、引言用在飞机和舰船上进行通信观测的一次雷达设备均有这样一个任务,即识别处在观察范围内的所有物体,并估计出其座标位置。如果反射物体位于空白的背景前,那么,在一般情况下,目标识别的任务是简单的。时此,可以把回波信号和一个固定的门限进行比较,当信号超过门限时,就认为是目标。然而,在雷达的应用实践中,目标实际上总是位于一个由充满点状、平面或立体延伸的反射体所构成的复杂背景前。为此,主要应研究这种背景,即反射体的规律以及时间和空间的变化。
I. INTRODUCTION A radar equipment used for the observation of communications on airplanes and ships has the task of identifying all objects in the observation range and estimating their coordinates. If the reflective object is in front of a blank background then, in general, the task of target recognition is simple. In this case, the echo signal can be compared with a fixed threshold, which is considered the target when the signal exceeds the threshold. However, in radar application practice, the goal is actually always in front of a complex background made up of reflectors that are full of point, plane or three-dimensional extensions. To this end, the main research should be the background, that is, the laws of the reflector and the changes in time and space.