Based on the concept of sliding mode control, we study the problem of steady state covariance assignment for bilinear stochastic systems. We find that the invariance property of sliding mode control ensures nullity of the matched bilinear term in the system on the sliding mode. By suitably using Ito calculus, the controller u(t) can be designed to force the feedback gain matrix G to achieve the...

We have created mock Sunyaev-Zel’dovich effect (SZE) surveys of galaxy clusters using high resolution N-body simulations. To the pure surveys we add ‘noise’ contributions appropriate to instrument and primary CMB anisotropies. Applying various cluster finding strategies to these mock surveys we generate catalogues which can be compared to the known positions and masses of the clusters in the si...

The perfectly matched layer (PML) method is well-studied for acoustic scattering problems, electromagnetic scattering problems, and more recently, elastic scattering problems, with homogeneous background media. The purpose of this paper is to present the stability and exponential convergence of the PML method for three-dimensional electromagnetic scattering problem in a twolayer medium. The mai...

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Searches for gravitational-wave transients from binary black hole coalescences typically rely on one of two approac...

93 266 396 (Indeoendent of range grid) Table 2 lists the number of floating-point operations required to set the initial points for the local search with respect to the number of grids in the range using MATLAB hnction ’flops’. The Quasi-Newton method was used to find the peaks of the 2-D MUSIC spectrum required to initialise the proposed algorithm. For both the 2-D MUSIC and 3-D MUSIC, the gri...

Feature extraction from observed noisy samples is a common important problem in statistics and engineering. This paper presents a novel general statistical approach to the region detection problem in long data sequences. The proposed technique is a multi-scale kernel regression in conjunction with statistical multiple testing for region detection while controlling the false discovery rate (FDR)...

The application of matched filtering to the problem of very low frequency (VLF) radio signals ducted between magnetically conjugate points on the Earth by ionospheric plasma structures has been examined theoretically and implemented in recent field experiments. With accurate knowledge of the source VLF emissions, the subionospheric component of the received waveform can be effectively removed a...

Due to the polarization mismatch of the antenna, the received signal suffers from energy loss. The conventional beamforming algorithms could not be applied to the conformal array because of the varying curvature. In order to overcome the energy loss of the received signal, a novel joint polarization-space matched filtering algorithm for cylindrical conformal array is proposed. First, the snapsh...

A matched filter is the optimal linear filter for maximizing the signal to noise ratio (SNR) in the presence of additive noise. Matched filters are commonly used in radar systems where the transmitted signal is known and may be used as a replica to be correlated with the received signal which can be carried out by multiplication in the frequency domain by applying Fourier Transform (FT). Fracti...

The hardware complexity is one of the most crippling handicaps of implementing a blind channel estimation scheme in a wireless receiver. The state-of-the-art blind channel estimation methods either need matrix decomposition methods, which are implementation inefficient and expensive, or higher order cumulant functions of the received data, which eventually leads to the need for long data record...