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Sidelobe cancellation is an effective beamforming method of interference suppression. In this paper, an analog and digital mixed system for sidelobe cancellation is introduced firstly. Then, a closed-loop sidelobe cancellation method based on iteration is proposed by using the previous system. The working principles of this method are derived and the working processes of this method are given in detail...
According to the echo envelop migration of MIMO radar translational moving target with a high speed, the characteristic of the echo is analyzed, then a novel compensation method, based on transmit signal pre-process, is proposed. The method makes envelops of echo pulses automatic alignment in the fast-slow time domain. At the receiver, combining the Fractional Fourier transmit (FrFT), two index phases...
In this paper, the statistic characteristics of the digital channelized receiver are studied in the context of additive white Gaussian noise. Based on the statistic characteristics, the automatic censored mean level (ACML) detector is proposed and its performance is analyzed by simulation. The results show that the simulated performance curves are very similar to the theoretical curves for the detection...
For the synthesis of symmetrical linear thinned arrays with a given thinning rate, it would have almost same MSLL solution between taking only segmental aperture nearby both ends of the aperture into account and taking the all aperture into account, at the same time, considering only segmental aperture can reduce the complex computing task remarkably. In this paper, the element distribution characteristic...
To circumvent the dilemma of range and Doppler ambiguity in the conventional pulsed Doppler radars, a stepped time interval pulse train (STIPT) scheme is proposed in this letter. The STIPT approach eliminates range and Doppler ambiguities by setting the pulse interval difference appropriately. The range sidelobes are removed through a modified aperiodic correlation algorithm. Furthermore, the fast...
A dwell scheduling model which takes the time and energy constraints into account is founded from the viewpoint of scheduling gain. Dwell scheduling strategy design is turned into a nonlinear programming procedure. A dwell scheduling algorithm is then given based on the genetic algorithm. Simulation results demonstrate that compared with the conventional adaptive scheduling method, the proposed algorithm...
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