Browsing Faculty Research Publications by Issue Date
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A note on continued fraction inversion by Routh's algorithm
(1974)This correspondence presents an algorithm for finding continued fraction inversion by Routh's algorithm. A recursive relation is given to implement the algorithm in a very simple way. This approach requires less computation ... 
Finite lag receivers for analog communication
(1975)The problem of designing optimum receivers with a finite builtin delay, for a class of stochastic signals, is considered. The approach used here is based on the socalled fixedlag smoothing techniques. Specific cases of ... 
Leastsquares state estimation in timedelay systems with colored observation noise: An innovations approach
(1975)the method of innovations approach has been applied to develop an algorithm for the leastsquares state estimation of a nonstationary linear discrete system with multiple timedelays, based on observations involving ... 
On optimal stationary control of systems with state dependent noise
(1975)This note proposes a simplified existence criterion for the linear quadratic optimal control law for systems with state dependent noise. 
A frequencyscanned slotarray on a coaxial slowwave structure
(1976)Frequencyscanned antenna arrays usually employ a sinuous feed to obtain a high frequency sensitivity [1], [2]. It has been realized [1] that this effect can alternatively be produced by using a slowwave feed, such as a ... 
Radiation distortions in fast frequencyscanned antenna arrays
(1976)The pattern deterioration that occurs at high scanning speeds in frequencyscanned arrays is studied. Four major effects are observed; these are 1) fall in main beam amplitude, 2) rise in sidelobe level, 3) angular shift ... 
Continuous time smoothing for systems with interrupted observations
(1976)General continuous time smoothing results for state estimation with interrupted observations are derived. The interruption mechanism is characterized by a jump Markov process taking values 0 or 1. The approach followed for ... 
A frequencyscanned slotarray on a coaxial slowwave structure
(1976)Frequencyscanned antenna arrays usually employ a sinuous feed to obtain a high frequency sensitivity [1], [2]. It has been realized [1] that this effect can alternatively be produced by using a slowwave feed, such as a ... 
Twostage identification of closedloop systems
(1977)A twostage identification method based on modeling error compensation for systems operating in closed loop is presented. The feedback regulator is assumed linear, timeinvariant. The model structure and the identification ... 
On bootstrap identification using stochastic approximation
(1977)A twostage state and parameter estimation algorithm for linear systems has been developed. Stage 1 uses a stochastic approximation method for state estimation, while stage 2 considers parameter estimation through a linear ... 
Modes in optical waveguides formed by silversodium ion exchange
(1978)Exact solutions of the scalar wave equation for the guided modes of planar optical waveguides formed by silversodium ion exchange have been obtained. It has been shown that there is good agreement between the exact solution ... 
On optimum receivers for analog communication in impulsive noise
(1978)In this paper the problem of impulsive noise suppression in analog communication systems is considered. The problem of demodulation of amplitude and phase modulated signals in the presence of impulsive noise is formulated ... 
Aggregation matrix for the reducedorder continued fraction expansion model of Chen and Shieh
(1978)A relationship between the states of a highorder system, and its reducedorder continued fraction expansion model of Chen and Shieh, has been derived. This relationship, in the form of an aggregation matrix, has been used ... 
Digital lowpass filtering using the discrete Hilbert transform
(1978)A matrix formulation for a digital lowpass filter, alternative to that given by Sabri and Steenaart, is presented. It is shown that the new formulation offers computational advantages and has better noise performance. 
Identification of stochastic timedelay systems
(1978)A method is presented to identify time lags present in systems described by linear, stochastic dynamical models usually encountered in process control. The model equation is first discretized and converted into a ... 
On simplification of unstable systems using Routh approximation technique
(1978)A modified modeling procedure using the direct Routh approximation method (DRAM) for a class of unstable systems has been presented in this technical note. The proposed method yields a model which is based on an improved ... 
Design of IIR filters using PseudoBoolean methods
(1978)PseudoBoolean methods are particularly suited to problems in which the variables take only two values, 0 and 1. In this paper, a method is presented for solving nonlinear pseudoBoolean inequalities, and is applied to ... 
Linear antenna arrays with broad nulls with applications to adaptive arrays
(1979)The problem of designing a class of linear antenna arrays with broad nulls against interfering signals of variable direction of arrival is considered. The problem is formulated in an appropriate signal space selected for ... 
A novel theorem with potential application to automatic equalization
(1979)When the signs of the alternate terms of a symmetric discrete time series are reversed and the resultant series is convolved with the original, the newly created time series will have alternate values equal to zero. This ... 
Comments on "Model reduction using the Routh stability criterion"
(1979)A model reduction technique suggested in the above paper is discussed. Although the proposed method is very simple and devoid of any tedious calculations it is shown that the applicability, of the technique is restricted. ...