Patent ID: 8259000
Filing Date: 2012-09-04
Classification: G01S

Abstract:
1. A Secondary Surveillance Radar (SSR) comprising a ground station including an antenna operable to receive an SSR reply signal including one or more S-Mode reply signals each having an S-Mode signal structure with preamble pulses, and/or one or more A/C-Mode reply signals each having an A/C-Mode signal structure with framing pulses; the ground station further including signal processing means coupled with the antenna to receive and process the SSR reply signal, and an S-Mode detector ( 20 ; 20 ′) coupled with the signal processing means to receive the processed SSR reply signal and designed to detect the S-Mode reply signal(s) in the SSR reply signal; the S-Mode detector ( an S-Mode filter ( characterized in that the S-Mode detector ( an S-Mode Constant False Alarm Rate (CFAR) device ( and in that the ground station further includes an A/C-Mode detector ( an A/C-Mode filter ( an A/C-Mode Constant False Alarm Rate (CFAR) device (