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Range-Doppler Sidelobe Suppression for Pulse-Diverse Waveforms
- Source :
- IEEE Transactions on Aerospace and Electronic Systems. 56:2835-2849
- Publication Year :
- 2020
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2020.
-
Abstract
- Waveform diversity, which can be used to obtain synthetic bandwidth or mitigate range ambiguity, interference, and folded clutters, has attracted a great deal of attention in recent years. However, the range sidelobe modulation effect between agile pulses yields high range-Doppler sidelobes in pulse-Doppler (PD) radar applications, because of which traditional window functions or mismatched filters (MMFs) do not apply. In this article, a Doppler-tuned matched filter is used to equivalently obtain the PD result. Then, to mitigate the high range-Doppler sidelobes, a two-dimensional MMF (2-D MMF) is proposed, and the relevant signal-to-noise ratio (SNR) loss is deduced. A cyclic algorithm is also designed to calculate the 2-D MMF for suppressing sidelobes over desired range-Doppler regions with constrained SNR loss and mainlobe width. Several simulations and an experiment based on real measured data of an airborne platform are conducted to illustrate the effectiveness of the proposed 2-D MMF.
- Subjects :
- Modulation effect
Computer science
Pulse (signal processing)
Matched filter
Acoustics
Bandwidth (signal processing)
Doppler radar
Aerospace Engineering
Interference (wave propagation)
Window function
law.invention
symbols.namesake
Signal-to-noise ratio
law
symbols
Waveform
Electrical and Electronic Engineering
Radar
Doppler effect
Subjects
Details
- ISSN :
- 23719877 and 00189251
- Volume :
- 56
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Aerospace and Electronic Systems
- Accession number :
- edsair.doi...........52a8ebcec43af5989407fb45fe3cea0c