关键词: 频率步进雷达, 生命探测与定位, 背景对消, 相隔固定时间数据, 间隔前数据

Abstract:

The detection and location of living objects using microwave radar is studied.In order to enhance the precision of the detection and the accuracy of the location of the living objects,two different methods for eliminating the background echo are proposed.If the living objects are relatively static,i.e.the target has no movement except breathing and heart beating,the data of a certain time are regarded as the background interference and are cancelled from the other data by a simple subtract operations.If the living object is moving or the body is largely swinging,the background interference is cancelled for the current data by subtracting the previous data with a fixed interval.Experiment shows the effectiveness of the proposed method.

Key words: stepped-frequency radar;life detection and location;background interference cancellation;the other is two data between each fixed time;the data before the interval