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The active impedance of each element in a phased array changes substantially with scan angle due to mutual coupling. Therefore, a key challenge in the design of wide-angle scanning phased array is to achieve wide-angle impedance matching (WAIM). In this communication, an efficient decoupling network is developed to reduce the mutual coupling between adjacent elements for this purpose. A complete scattering...
Recently, with the rapid development of inshore tourism, the appropriate beaches for antennas distribution are lesser and lesser. So it is imperative to find a new way for high frequency radar system. By locating the transmitters and receivers in a circular array can reduce the area of the transmitters and receivers in a single beach, as we locate the array in a circular mode in different places instead...
In this paper, a novel simplified architecture of inter-channel code division multiplexing (IC-CDM) for radar receiver is presented. This architecture uses multi-phase code to distinguish different channels from the aggregate signal, so that all array elements can share one set of signal processor instead of such a device on each element in the previous technology. In this paper, a computer simulation...
In order to boost HF radar angle resolution and reduce the physical size of array, we adopt multi-carrier frequency in MIMO HFSWR system, which also lead to the benefit of the frequency diversity. Beamforming at receive array is studied in this paper, and thanks to the using of large spaced carrier frequency combination, better angle resolution is obtained by a nonuniform virtual array (a minimally...
In order to enhance HF radar angle resolution, and overcome target RCS scintillations, we adopt the transmitting and receiving antennas sparse deployment under bistatic pattern, the element intervals far less than range from the target to transmitters and receiver, the transmitters emit multi-carrier frequencies. In this paper, we apply CVX theory to solve the optimal weights of each element at different...
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