Monopulse Secondary Surveillance Radar – Environment Impact on Target Detection

This paper presents the impact of the environment on target detection in monopulse secondary surveillance radar (MSSR) systems. The concrete case of electromagnetic (EM) signal propagation in the aircraft MSSR aircraft (AVO) dialogue is studied, highlighting the positioning anomalies that can occur when the signal path is obstructed by a line of trees. Real MSSR positioning data is presented to exemplify the resulting positioning errors.