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Your search keyword '"Bastani, Mohammad Hasan"' showing total 11 results
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11 results on '"Bastani, Mohammad Hasan"'

3. Distributed source localization using ESPRIT algorithm

Author

Shahbazpanahi, Shahram, Valaee, Shahrokh, and Bastani, Mohammad Hasan

Subjects
Signal processing -- Research, Array processors -- Research, Business, Computers, Electronics, Electronics and electrical industries
Abstract

An algorithm that relies on ESPRIT is proposed for estimating the central angle and angular extension of distributed sources. The algorithm is applicable to sources with different angular distributions.

Published
2001

5. Adaptive CFAR Processor For Nonhomogeneous Environments

Author

KHALIGHI, MOHAMMAD ALI and BASTANI, MOHAMMAD HASAN

Subjects
False alarms -- Research, Signal detection (Electronics) -- Research, Signal processing -- Research, Radar simulation -- Usage, Aerospace and defense industries, Business, Computers, Electronics, Electronics and electrical industries
Abstract

A new constant false alarm rate (CFAR) processor is presented, that exhibits a noticeable detection performance in the presence of interfering targets, as well as an excellent false alarm rate (FAR) regulation at the clutter power transition regions. The presented CFAR processor, which is designed to work on the logarithmic amplified video signals, can also easily adapt itself to new environmental conditions. Furthermore, in the steady state, its performance does not depend on the background noise power. Simulation results show the obvious preference of the presented processor to the conventional GOCA-LOG/CFAR, regarding FAR regulation at the clutter power transition regions. Noncoherent integration of radar pulses is considered in the analyses.

Published
2000

11. Robust design of transmit code and receive filter for extended targets in clutter

Author

M. H. Bastani, Augusto Aubry, Seyyed Mohammad Karbasi, Antonio De Maio, Karbasi, Mohammad, Aubry, Augusto, DE MAIO, Antonio, and Bastani, Mohammad Hasan

Subjects
Semidefinite programming, Transmitter, Semi-definite programming, PAR constraint, law.invention, Robust design, Control theory, law, Robustness (computer science), Figure of merit, Clutter, Radar, Impulse response, Extended target model, Signal- dependent interference, Computer Science::Information Theory, Mathematics
Abstract

We propose a novel robust design method to jointly optimize the radar transmit code and receive filter, exploiting the signal-to-interference-plus-noise ratio (SINR) at the receiver end as design figure of merit. We confer robustness to our method against uncertainties on the target impulse response (TIR) using a worst-case optimization approach. Precisely, we model the uncertainty set as a finite collection of TIRs, obtained sampling the actual TIR at some aspect angles. We further enforce a peak-to-average power ratio (PAR) constraint to the transmit code, which is very important for radar applications, where the transmitter operates close to saturation. The design problem is tackled using a sequential optimization procedure alternating between two semi-definite programming (SDP) problems, followed by randomization steps. Our numerical results highlight the robustness and applicability of the proposed method.

Published
2015
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