Simulator for advanced fighter radar EPM development

Design of Real-time Convolution Processor and its Application in Radar Echo Signal Simulator

“…The report of radar signal simulation based on DRFM technology can be found from reference [5][6][7], the basic idea is first sample the radar signal and store the digitalized signal into memory banks, after certain times delay and frequency-amplitude modulation, the reproduced signals are transmitted to radar. The delay lines or digital delay technique using FIFO is useful to simulate radar echoes from signal point object, we can also input the sampled radar signal into convolution processor with certain coefficient sequence to simulate complex radar scatterers from range-extend objects.…”

Exploiting incoherent sampling to provide electronic protection against digital radio frequency memory jammers

“…RGPO and VGPO can be coordinated together. This ensures that the range his tory is consistent with the velocities portrayed by the jammer [5]. If these techniques are not coordinated, radars with both range and range rate trackers can detect the physically impossible motions, and then deduce those signals to be from a jammer.…”

“…Detailed descriptions of these techniques can be found in [5] and [6], with only short descriptions found below.…”

“…RGPO is also known as range gate stealing or range gate walk-off. The purpose of RGPO is to create a false target in the threat radar that is offset in range, or equivalently time, from the actual skin return [5]. It can create down range and up range targets, the latter being the most difficult.…”

“…VGPO can also be known as velocity gate stealing or velocity gate walk-off. The purpose of VGPO is to create a false target in the threat radar that is offset in velocity, or equivalently Doppler, from the actual skin return [5]. This technique is typically varied in time so that it seems that the created false target is "pulled-off" the skin return.…”