Radio measurement method, esp. for characterising detected targets or disturbances

摘要

Radio signals are measured by measuring and processing polarisation scatter matrices, disturbances or radio signal sources together with a transmitter antenna system matrix, AS and a receiver antenna system matrix UE. Polarisation dependent factors of the transmission path are included in addition to the polarisation-dependent factors of the transmission and reception antenna.The desired target matrix, Z or radio signal source matrix, s is obtained from the measured matrix M using a reverse transformation.Z = AE<-1>. M. AS<-1> or S = AS<-1> AE<-1>. MThe transmission field strength vector of the target location, ES, and the receiver field strength of the target location, EE are obtd. as follows: ES = AS AS<-1>. US'= US', and UE' AE<-1>. Ae. EE = EE. US is the signal vector before at the transmission input processing. and UE' is the signal vector at the receiver output after signal processing.