The attenuation of radar wave after penetrating wall and the wavelength selecting were summarized,radar echo signal was theoretically deduced,Bessel function was introduced into processing echo signal and the basic frequencies and harmonic combinations of breathing and heart beating were simulated.

Oilpaper capacity type wall bushing is used for insulation and fixed HV or EHV conductor that crosses the wallboard of building in power plant and substation mainly.

Experience about platen superheater’s abrasion proof, heat expansion and sealing to through the wall in arrangement.

A novel radar arrangement has been proposed to alleviate the negative impact of false target on ultra wideband through-wall imaging(UWB-TWI),thereby guarantees the unchanged relative orders of receiving impulses and keeps one-to-one correspondence with target points theoretically.

Ultra-wideband (UWB) through-wall imaging radar is a promising technique and can be widely used for detecting and locating moving people through obstacles.