I would like to ask the experts if there exists an air defense system with truly passive detection of radio signals emanating from the aircraft to include voice and data radio transmissions, IFF, TACAN/DME or RSBN-4, Doppler navigation, radar, radio altimeters or similar signals? I mean a system that involves a high level of integration of its parts, possibly self-contained on a truck chassis, not a complex system of multiple radars with AD artillery and missile launchers spread over a large area.
The transmissions emanating from the aircraft can be powerful, thus their detection is possible at relatively large distances. Some airborne TACAN radios pump 500W of RF energy into the antennas.
I am of course aware that deploying eg. four or more ESM stations over a large area would allow wireless triangulation of the adversary aircraft signals.
In the past, Eastern Block's countries developed such ESM, like the Czech Kopac, Ramona, Tamara, and Vera, or the Soviet/Ukrainian Kolchuga, but it remains unclear if they were seriously incorporated into air defenses. It is also unclear how these ESM sets exchanged data between each other to facilitate direction finding.
The transmissions emanating from the aircraft can be powerful, thus their detection is possible at relatively large distances. Some airborne TACAN radios pump 500W of RF energy into the antennas.
I am of course aware that deploying eg. four or more ESM stations over a large area would allow wireless triangulation of the adversary aircraft signals.
In the past, Eastern Block's countries developed such ESM, like the Czech Kopac, Ramona, Tamara, and Vera, or the Soviet/Ukrainian Kolchuga, but it remains unclear if they were seriously incorporated into air defenses. It is also unclear how these ESM sets exchanged data between each other to facilitate direction finding.
