نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری ، دانشگاه جامع امام حسین (ع)، تهران، ایران
2 دانشیار ،دانشگاه جامع امام حسین (ع)، تهران، ایران
3 استادیار ، دانشگاه صنعتی امیرکبیر،تهران، ایران
4 استادیار ،دانشگاه جامع امام حسین (ع)، تهران، ایران
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
In this paper, we aim at designing sets of discrete-phase fixed-amplitude with proper aperiodic autocorrelation and cross-correlation functions for widely separated multiple-input multiple-output (WS-MIMO) radar transmitters, which should be using simultaneously narrow-band interference (jammers) or telecommunications link systems. We show that in design waveform level, we can achieve the sets of sequences be obtained by minimizing the maximum Integrated side lobe level (ISL) of the codes (in time domain) and removing the passband of the interference systems or the desired telecommunication links (in the frequency domain). It should be noted that any desired WS-MIMO radar transmitter should take action to remove the measured undesirable frequency band in a cognitive way from its surrounding environment. Finally, a set of designed sequences, each one has a band removed according to its surrounding environment, and the ISL of the autocorrelation and cross-correlation functions of all pairs of its transmitters is minimized. In the proposed method, a multi-dimensional constrained optimization problem is defined with the help of Pareto weight functions to minimize ISLR and undesirable spectral band together simultaneously. Then, using the coordinate descent (CD) framework, an efficient uniform algorithm based on fast Fourier transform (FFT) is proposed to minimize the multidimensional objective function.
کلیدواژه‌ها [English]
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