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This paper introduces a new direction of arrival (DOA) estimation method for Doppler radars with Multiple-input multiple-output (MIMO) systems, which have been used in various applications, for example, detection and classification of indoor human activities. To improve DOA estimation accuracy, the temporal-spatial virtual array based on Doppler shift of a moving target has been proposed; hereafter...
3-Dimensional distributed array antenna is considered for radar system [1]. This kind of array antenna can form very narrow beam. A radar system with a distributed array provides high-resolution. However, it has a problem that there are grating-lobes on the beam pattern. To suppress grating-lobes, an effective method is to locate antenna elements nonuniformly [2]. On the other hand, a phase comparison...
In this paper the use of uniform rectangular antenna arrays for both transmitter (Tx)-and receiver (Rx)-antennas in multiple input multiple output (MIMO) channel model for code division multiple access (CDMA) frequency on-selective and slow fading channel. Subspace-based algorithm for the simultaneous estimation of angle of arrivals (AOAs) and angle of departures (AODs) from an estimated spatial signature...
Recently, MIMO techniques have been using in active radars,and become a hot topic in radar field, where they improve the performance of detection and parameters estimation greatly. On estimates of direction-of-arrival (DOA) in active radars, generally elements of the receive array were closely spaced to enable direction finding measurements. However, in order to obtain angular diversity, all elements...
This paper studies the velocity estimation performance for multiple-input multiple-output (MIMO) radar. MIMO radar employing widely dispersed antennas has an advantage in dealing with moving targets. By transmitting orthogonal waveforms MIMO radar can separate these waveforms at each receive antenna and has the ability to observe targets from different directions simultaneously. Unlike conventional...
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