Range migration compensation for moving targets in chirp radars with stepped frequency. Issue 19 (5th July 2019)

• Record Type: Journal Article
• Authors: Sen, Wang; Qinglong, Bao; Zengping, Chen
• Is Part Of: Journal of engineering. Volume 2019:Issue 19(2019)
• Page Start: 5553
• Page End: 5557
• Publication Date: 2019-07-05
• Subjects: object detection -- radar detection -- radar resolution; stepped frequency -- long‐time coherent pulse integration method -- detection performance -- high radial velocity -- chirp radars -- adjacent cross‐correlation operation -- arbitrary unknown constant velocity -- range migration compensation -- weak target detection -- range resolution; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2019.0414
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : Long‐time coherent pulse integration method has been extensively used in detecting weak targets, but the detection performance is affected by range migration (RM) due to high radial velocity. This study proposes a new modulation format of chirp radars with stepped frequency and a corresponding coherent integration method based on adjacent cross‐correlation operation (ACCO) to compensate RMs of moving targets with, respectively, arbitrary unknown constant velocity. Simulation results show that the method has higher range resolution compared with bandwidth variation modulation and shorter blind distance compared with duration variation modulation.