摘要
针对基于波瓣分裂的米波雷达测高方法只能在低仰角范围内（1°～11°）测高的问题，提出一种将数字波隶形成（DBF，Digital Beam Forming）技术与波瓣分裂相结合的米波雷达测高方法，以扩大仰角测量范围（1°～25°）。该方法采用5个不同高度的天线接收回波信号，利用DBF技术，判断出目标的仰角范围。再利用“比幅比相”的方法进行测高。计算机仿真结果表明：该方法对仰角在25°以下的目标能有效地测量高度。
The method based on beam split to measure height of target with meter-wave radar can only be used for low elevation range（1°-11°）. In order to resolve the problem, a new method which combines digital beam forming（DBF） technology with the foregoing method to increase measurable elevation range is presented in this paper. This method adoptes five antennas with different height, using the technology of DBF to determine the elevation range where targets are located, and using ＂phase comparison＂ and ＂amplitude comparison＂ of different signals, then acquiring the elevation of the target through looking up a table. The result of experiment shows that measurable elevation can achieve 25°.
出处
《雷达科学与技术》
2006年第2期65-70,共6页
Radar Science and Technology
关键词
米波雷达
测高
波瓣分裂
数字波束形成
VHF radar
altitude measurement
beam split
digital beam forming（DBF）
