Leakage Mitigation in Heterodyne FMCW Radar For Small Drone Detection with Stationary Point Concentration Technique

Abstract

Recently, as the drones have become smaller and smarter, they are emerging as new threats to the military and the public. To prevent the threats, the development of the radar to detect the small drones is needed. The frequency modulated continuous wave (FMCW) radar is one of the radar types for the drone detection. The heterodyne architecture for the FMCW radar is often applied to resolve the dc offset problem. However, the leakage from a transmitter into a receiver, the notorious problem of the FMCW radar, is still a challenging problem. Especially, the phase noise of the leakage increases the noise floor and deteriorates the signal to noise ratio. In order to mitigate this problem, in this paper, the stationary point concentration technique is proposed. Without additional hardware, the proposed technique can be implemented through frequency planning and digital signal processing. The results show that the proposed technique significantly lowers the noise floor over the desired range domain.

This work has been submitted to the IEEE for possible publication. arXiv admin note: text overlap with arXiv:1807.06324

Cited by in corpus (4)

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• Advanced Stationary Point Concentration Technique for Leakage Mitigation and Small Drone Detection with FMCW Radar
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• FMCW SAR with New Synthesis Method Based on A-SPC Technique