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Micromotion Feature Extraction Based on Phase-Derived Range and Velocity Measurement
- Source :
- IEEE Access, Vol 7, Pp 114167-114182 (2019)
- Publication Year :
- 2019
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2019.
-
Abstract
- Micromotion features of a target contain unique structural information and motion information about the target, which can be used as an important basis for target recognition. One of the technical bottlenecks for micromotion feature extraction is achieving a fine characterization of the target motion state. With the high-precision range and velocity measurement, this paper uses the phase-derived method to reconstruct the motion state of the target and realize accurate translational compensation for the target. At the same time, the high range resolution of wideband radar is used to effectively extract target scattering points with micromotion from the perspective of the one-dimensional high range resolution profile and the two-dimensional inverse synthetic aperture radar (ISAR) image. On this basis, reliable micromotion feature extraction can be achieved by using the slow variability of the target motion and eliminating the translational or rotational information of the target. The performance of the high-precision range and velocity measurement and the feasibility of the micromotion feature extraction based on phase-derived range and velocity measurement are verified by simulation results. Then, the effectiveness of the proposed algorithm is further verified by carrying out a steel ball ejection experiment and a civil aviation aircraft experiment.
- Subjects :
- General Computer Science
Basis (linear algebra)
Scattering
Computer science
Acoustics
Feature extraction
Perspective (graphical)
0211 other engineering and technologies
General Engineering
Phase (waves)
02 engineering and technology
High range resolution profile (HRRP)
phase-derived velocity measurement (PDVM)
Compensation (engineering)
Inverse synthetic aperture radar
inverse synthetic aperture radar (ISAR) image
micromotion feature extraction
Range (statistics)
phase-derived range measurement (PDRM)
General Materials Science
lcsh:Electrical engineering. Electronics. Nuclear engineering
lcsh:TK1-9971
021101 geological & geomatics engineering
Subjects
Details
- ISSN :
- 21693536
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- IEEE Access
- Accession number :
- edsair.doi.dedup.....20351585fb3b2133750ecd75acfa64cf