WSEAS Transactions on Signal Processing
Print ISSN: 1790-5052, E-ISSN: 2224-3488
Volume 11, 2015
Linearity Enhancement Technique Based on Adaptive Sweep Optimization in Time Varying Gain Amplifier for Wide Dynamic Range Radar
Authors: , ,
Abstract: Radar receiver must be able to detect all targets that appears in the designed maximum range, these targets echo signals will have different power levels according to the radar cross section changing, the jamming, and the clutter, this paper proposes a new technique for increasing the wide dynamic range of the radar receiver in order to detect all the signals power levels, this technique based on using time varying gain amplifier (TVGA) for achieving compensation of the power loss due to range, and then using an adaptive sweep optimization (ASO) technique for increasing the linear rejoin of the time varying gain amplifier, the simulation was done using matlab, it shows that intermodulation ratio (IMR) was improved for the time varying gain amplifier electronic circuit, the comparison results with the old methods shows that the probability of detection for the radar was increased using the new technique (ASO/TVGA), for more validation the radar system was tested by detecting three targets at different ranges.
Search Articles
Pages: 69-78
WSEAS Transactions on Signal Processing, ISSN / E-ISSN: 1790-5052 / 2224-3488, Volume 11, 2015, Art. #9