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The linear constrained minimum variance(LCMV) beam former is proposed when there are main lobe interference and other interferences in adaptive beam forming. Generalized side lobe canceller is equivalent to achieve a LCMV structure with the blocking matrix, which is an important part of it. This paper propose a new dimension reduction matrix blocking theory basing on the defects of the general block...
Incorporating the time-frequency (t-f) distribution of narrow-band near-field sources, a novel subspace-based method with orthogonal symmetry array for 3-D (azimuth-elevation-range) parameters estimation is introduced in this paper. Considering the t-f signature of one source, we derived the t-f distribution matrices by adopting whose subspaces rotation invariance to find the 3-D parameters estimation...
The notion of estimating ultrasonic pulse's TOF (time-of-flight) by estimating the parameters of double exponential model is introduced. The TOF of ultrasonic pulse comes down to the function of exponential terms' coefficients in the double exponential model, and can be estimated by the least square method with very little computational load. The simulations show that the performance of the method...
Adaptive OFDM technology is the real-time response of the transmitter according to the time-varying channel, it has been widely applied to wireless channels with multi-path interference to build high-speed, reliable communication links. At present, Campello algorithm should be the relatively outstanding adaptive OFDM algorithm in comparison, but it needs a great amount of computation. Hence, we proposes...
Image is analysed under multi-scale filtering in Canny algorithm frame. Firstly, scale multiplication is defined by filter responses multiplication of two different scales. Then the modulus and orientation is determined by the similarity of adjacent scales. Thirdly, a threshold value is chosen to eliminate false edge. Finally, the edge is obtained after non-maximum suppression. Experimental results...
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