Transpolarising Trihedral Corner Reflector Characterisation Using a   GB-SAR System
  The use of a low profile, light weight and easy to fabricate transpolarising surface placed on one side of a trihedral corner reflector (TCR) as polarimetric calibrator is presented in this letter. The transpolarising-TCR (TTCR) presents a high backscattered cross-polar response contrary to standard TCRs. The performance of this device has been tested at X-band using the UPC GB-SAR. 
Pere J. Ferrer, Carlos Lopez-Martinez, Albert Aguasca, Luca Pipia,   Jose M. Gonzalez-Arbesu, Xavier Fabregas, and Jordi Romeu
physics.ins-det hep-ex