Free space transmission reflection calibration method

The present invention provides a free space transmission reflection calibration method based on double reflecting plate calibration members which can solve the dependence problem on a high-precision mechanical clamp during a material electromagnetic parameter test system calibration process and can avoid the complicated time domain transformation. The free space transmission reflection calibration method based on the double reflecting plate calibration members establishes a complete free space transmission reflection test error term model, and establishes an equation set according with a condition of solving the number of the unknown numbers by the measurement of three simple calibration members, finishes the calibration of a free space material electromagnetic parameter test system on the condition of fixing a transceiver antenna, and avoids the dependence on a high-precision test clamp and the complicated time domain transformation.