Back to Search
Start Over
Radar maneuvering target detection based on two steps scaling and fractional Fourier transform
- Source :
- Signal Processing. 155:1-13
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- This paper considers the detection problem of radar maneuvering target with the range migration (RM) and Doppler frequency migration (DFM) and proposes an coherent integration method based on two steps scaling and fractional Fourier transform, i.e., TSS-FrFT. To be specific, this method corrects the quadratic RM (QRM) and DFM based on FrFT and a scaling processing of the rotation angle firstly. Then, it eliminates the coupling between the range frequency variable and FrFT domain (FrFD) variable via a second scaling processing. In the end, the coherent integration is achieved by the inverse Fourier transform (IFT) with respect to the range frequency variable. Compared with the existing methods, the proposed TSS-FrFT method has superior detection performance and low computational complexity. Moreover, considering the sudden change of the target acceleration within the coherent integration interval, this paper also presents an acceleration matched filter (AMF) to remove the Doppler frequency rate change (DFRC) caused by this acceleration change. Computer simulation results are also given to demonstrate the effectiveness of the proposed method from different aspects, i.e., computational complexity, coherent integration for a single target and multiple targets and detection performance for a uniform acceleration and non-uniform accelerations.
- Subjects :
- Computer science
Matched filter
020206 networking & telecommunications
02 engineering and technology
Fractional Fourier transform
law.invention
symbols.namesake
Fourier transform
Control and Systems Engineering
law
Signal Processing
0202 electrical engineering, electronic engineering, information engineering
symbols
020201 artificial intelligence & image processing
Computer Vision and Pattern Recognition
Electrical and Electronic Engineering
Radar
Scaling
Rotation (mathematics)
Algorithm
Software
Subjects
Details
- ISSN :
- 01651684
- Volume :
- 155
- Database :
- OpenAIRE
- Journal :
- Signal Processing
- Accession number :
- edsair.doi...........420c153c8e72fc479b483eaf66e4dfd1