SkyRadar's FreeScopes module "Disturbance Filtering & Analysis I" provides two algorithms for barrage jamming detection. An important aspect of Barrage jamming is power density. Power density is a function of the frequency range, or bandwidth, of the jamming signal. If a jammer covers a narrow frequency range, it can concentrate energy in a narrow band. If a jammer covers a wide frequency range, the energy is spread over that entire range. Since the jammer has fixed radiated power, this lowers the effective jamming power at a given frequency. Barrage jamming is a jamming technique where high power is sacrificed for the continuous coverage of several radar frequencies. Therefore, in order to be able to detect the real target signal in the noise jammed signal, several tracking techniques need to be concatenated
SkyRadar's FreeScopes module "Disturbance Filtering & Analysis I" provides two algorithms for barrage jamming detection:
- Basic Barrage-noise jamming detection algorithm and
- Advanced Barrage-noise jamming detection algorithm
Basic Barrage-noise jamming detection algorithm
This algorithm employs the detection threshold, MTI and a range check principle to detect moving targets in a completely jammed environment.
The newly introduced method of range check, estimates the position of targets within a predetermined window after a threshold detection and an MTI on the received signal. This algorithm delivers good results overall, however, it has also a high rate of false positives. Therefore, SkyRadar development team also introduced tracking on the last steps of jamming detection.
Advanced Barrage-noise jamming detection algorithm
This algorithm, in comparison with the basic solution, also employs a Kalman Filter on top in order to predict and correct possible false positive targets. In this way, the algorithm heavily decreases the number of false positives in comparison with the basic jamming detection technique.
How to teach jamming with SkyRadar Modules
SkyRadar suggests the following 3 scenarios to teach jamming and electronic warfare:
- Full simulation (radar and jammer are simulated)
- Real radar and simulated jammer
- Real radar and real jammer