نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری، دانشگاه یزد، یزد، ایران
2 استادیار، گروه مخابرات، دانشکده برق، دانشگاه یزد، یزد، ایران
3 دانشیار، دانشگاه صنعتی نوشیروانی بابل، بابل، ایران
4 دانشیار، دانشگاه یزد، یزد، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In this paper, phased multiple-input-multiple-output radars (known as PMRs) that transmit
frequency diverse orthogonal signals with full overlapped sub-arrays are studied. At first, the
optimal detector of PMR is designed by assuming heterogeneous clutter and random target
scattering coefficients. Then, for the optimal detector, the closed-form detection probability and
false-alarm rate are computed. At the end, the power assigned to the orthogonal signals is
optimized analytically based on the convex optimization framework to maximize the detection
probability. The numerical simulations show that the optimal detector is a joint spatial-temporal
filter that attenuates the clutters considerably by effectively combining orthogonal signals in
order to to improve the PMR detection probability in comparison with the phased radar (PR).
Furthermore, simulation results illustrate that optimal power assignment in the form of
orthogonal waves, based on the statistics of the target scatterings and that of the clutter,
improves the detection performance of the PMR in comparison with the conventional equal
power assignment methods.
کلیدواژهها [English]