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A binary communication channel under the action of additive Gaussian and non-Gaussian broadband and narrow-band interferences is considered in order to identify the possibilities of using the method of bispectral analysis for the detection and recovery of the useful signal. The discrete random process with SL Johnson distribution is taken as non-Gaussian noise. The estimation of periodic signal detection...
It is known that accurate partition of subspaces is important to fourth-order statistics based multiple signal classification (FO-MUSIC) algorithm. However, when the number of signals exceeds the number of array elements, the error of conventional subspace partition method will increase, and the performance of FO-MUSIC algorithm will decrease. A novel subspace partition method for FO-MUSIC algorithm...
In order to sort frequency hopping networks, the problem of estimating Direction of Arrival (dOA) of frequency hopping signals in underdetermined case is discussed in this paper. Inspired by the underdetermined blind source separation algorithm and product of hopping frequency and DOA in frequency hopping signals mixing matrix, a novel underdetermined DOA estimation method is proposed. Firstly, mixing...
Electromagnetic compatibly (EMC) is required to be investigated for newly introduced on-board Wireless Avionics Intra-Communication (WAIC) systems. In this paper, the feasibility of the detailed electromagnetic field (EMF) estimation method for the Airbus A320 class passenger aircraft at 4 GHz band is discussed. Firstly, the three-dimensional analysis model based on Airbus A320-200 aircraft is developed...
In this paper, a new algorithm to suppress the interferences for Direction-of-Arrival(DOA) estimation is presented. The method is based on the property of the noise subspace invariant to power of emitters. With theoretical analysis and computer simulations, it is shown that the proposed method has a good performance on signal DOA estimation under disturbances.
This paper describes a novel algorithm for estimating the parameters of a quadratic frequency modulated (QFM) signal under low signal to noise ratio (SNR). The proposed method combines the frequency domain method called Lv's Distribution and the time domain method called high order ambiguity function (HAF) to improve the estimation performance. The algorithm is following two stage approaches. First,...
This work describes the initial principles of microwave discernibility conditions for metallic sphere, placed at the center of waveguide cross section. Having previously obtained data for this position, low frequencies range for transmission line are in interest. For further clarification, recombination algorithm from free space to line reflection coefficient was developed. New obtained formulation...
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