The baseline wander has special characteristics, such as low frequency, large amplitude, non-periodic and non-stationary. This phenomenon is causes by the receiving coil motion and always exists in the process of data acquisition. The proposed method can be used to solve similar problem. This paper has the following highlights: 1. The method can be used to process non-periodic and non-stationary signal. 2. The method own adaptive to satisfy stopping criterion based on measured signal.

At present, indoor positioning technology is used in all aspects of life. I study the positioning method of UWB radar network. Because of the interference in the indoor environment, the UWB radar measurement data produce abnormal values. In order to eliminate the outliers, the method of fitting the known true value with the actual measured value is used to obtain the linear relationship between the true value and the measured value, so as to get the unknown true value through the measured value.