2020 agenda


Augmenting Existing Radar and Air Defence Systems

17 Nov 2020
Track 2
Radar systems form the cornerstone of any modern air defense setup, and the situational awareness that they provide is still unmatched. Even radar, though, has some weaknesses - system performance can be downgraded by jamming, and enemy forces may be able to detect and locate the radar by monitoring the outbound signal. Additional, complementary technologies can be employed to ensure that enemy aircraft cannot take advantage of these issues. One particularly promising means of doing so is to use aircrafts' own radio frequency (RF) transmissions to detect and locate them.

In this presentation, we will discuss how passive geolocation using RF can be incorporated into an air defense system, to augment existing radar systems. We will describe the basic operating principles of RF systems, including 3D time difference of arrival (TDOA) systems. We will show how, as a completely passive system, RF allows for monitoring of aircraft without alerting those aircraft to the fact that they are being monitored. This is of particular relevance for missile defense system cueing, where incoming aircraft can be passively tracked as they approach a radar station. Fire-control radar systems can then be engaged at the last possible moment, allowing for precise missile targeting.
Darren Nicholls, Aerospace and Defence Specialist - CRFS Ltd