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Source parameter estimation is an appealing research topic over decades in the field of array signal processing. The estimation performance of multidimensional parameter directly influences the effect of subsequent procedures, such as signal detection and filtering. In this paper we give a brief review of direction of arrival (DOA) and polarization parameter estimation methods. Based on a sensor array...
In this paper, we modify the classic manifold separation technique (MST), aiming to reduce its dependence on high signal-to-noise ratio (SNR) measuring environment. According to the analysis of the array response, it is demonstrated that to maintain a correct phase relationship between the received data at different calibration angles is indispensable for the application of MST. Thus, we slightly...
Direction of arrival (DOA) is an important parameter to be measured in pulse compression radar (PCR) systems. It is more favorable for DOA estimation to be done after pulse compression, because the targets have been separated in range domain and usually have higher SNR. But after pulse compression, only a single snapshot is available in each range cell. As a result, conventional DOA estimation methods...
Fast Polarization MUSIC is an algorithm which can utilize the advantage of the signals polarization state to estimate their directions. Its capacity in resolving close signals is considerably enhanced, with acceptable computation complexity. In this paper, analysis of this algorithm's performance in estimation precision, resolution of close signals and computation complexity are presented. Relating...
This article presents a fast algorithm for joint spectral estimation of the two-dimensional (2-D) angles and polarization of the impinging signals. The algorithm utilizes the continuity property of the signal polarization. By detecting the polarization state of some location in the space, the polarization state of the adjacent position can be limited into a small area and calculated at a small expense...
Very high analog-to-digital (A/D) sampling rate is a key problem to be solved in a ultra-wideband (UWB) communication system. To reduce the A/D sampling rate, a novel low sampling rate receiver based on nonuniform sampling in the frequency domain is proposed. The incoming signal is divided into several subchannels, and signals at some subchannels are sampled at nonuniform sampling rates in the analog-to-digital...
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