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Suppression of Doppler dispersion in the target detection with multi-carrier signal
- Source :
- The Journal of China Universities of Posts and Telecommunications. 23:1-30
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- The output of each individual channel in multi-carrier system can be processed to detect moving targets by the approach used in tradition narrowband pulse Doppler (PD) radar and then using non-coherent integration to promote signal noise ratio (SNR). However, due to the difference of Doppler on sub-carriers, there occurs Doppler dispersion during non-coherent integration, which causes attenuation and extension on target's amplitude. Especially, it can deteriorate performance of target detection under wideband multicarrier system or fast-moving target scene. In this paper, a modified Fourier transform kernel is proposed to solve Doppler dispersion for multi-carrier chirp signal. It can achieve accumulation at the same frequency point for the target's Doppler of each subcarrier. The simulation results indicate that this method can effectively eliminate the integral loss caused by Doppler dispersion.
- Subjects :
- Physics
020301 aerospace & aeronautics
Computer Networks and Communications
business.industry
Pulse-Doppler radar
Acoustics
020206 networking & telecommunications
02 engineering and technology
Signal
Subcarrier
law.invention
symbols.namesake
Narrowband
0203 mechanical engineering
law
Signal Processing
Dispersion (optics)
0202 electrical engineering, electronic engineering, information engineering
Chirp
symbols
Radar
Telecommunications
business
Doppler effect
Information Systems
Subjects
Details
- ISSN :
- 10058885
- Volume :
- 23
- Database :
- OpenAIRE
- Journal :
- The Journal of China Universities of Posts and Telecommunications
- Accession number :
- edsair.doi...........6cbeb023f045ae0d1a48bd32f363e69e