摘要
杂波图是雷达信号处理中一种常用的杂波抑制方法,在对空警戒雷达中应用广泛。杂波图单元划分的方法有等扇区和等面积2种。等面积划分可以使杂波图的自由速度在整个雷达作用范围内相同,因而可以得到比常规的等扇区划分杂波图更好的杂波抑制率,但等面积划分方法比较复杂,工程实现困难,限制了其应用。文中对等面积杂波图的单元划分方法进行了分析,提出了一种基于DSP技术的等面积杂波图设计与实现方法,利用DSP软件可以灵活编程的特点,通过软件编程的方法实现等面积杂波单元的划分及杂波图扩展检测功能,工程实现方便。
The clutter map is a commonly used method for clutter suppression in radar signal processing, and it has been widely used in air surveillance radar. There are two kinds of clutter-map element partition. One is equal-fan-shaped method and another is equal-area-shaped method, the equal-area-shaped method can make the free-velocity of the clutter map equal in the whole radar range, so it can achieve better clutter suppression performance than the normal equal-fan-shaped clutter map. But the equal-area-shaped partition is complicated and difficult to realize, so it hasn＇t been used widely. In this paper we analyze the partition method of the equal-area-shaped clutter map, and present a way of design and realizing the equal-area-shaped clutter map. With the help of the agility of software, we can realize the partition and the expended detection of the equal-area-shaped clutter map using software programming, and this is much easier to do in engineering design.
出处
《电子工程师》
2008年第6期1-3,20,共4页
Electronic Engineer
关键词
杂波图
等面积
等扇区
DSP
clutter map
equal-area-shaped
equal-fan-shaped
DSP
