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Systems Engineering and Electronics, Journal of

Issue 3 • Date Sept. 1996

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Displaying Results 1 - 12 of 12
  • [Front cover]

    Page(s): c1
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    Freely Available from IEEE
  • Copyright page

    Page(s): 1
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (849 KB)  

    The journal of Systems Engineering and Electronics is published in Chinese and in English. The Chinese edition (ISSN 1001-506X, first issue in 1979) comes out monthly with English abstracts, and the English edition (ISSN 1004-4132, first issue in 1990) comes out quarterly. Both are high-tech oriented. View full abstract»

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  • Contents

    Page(s): 1
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    Freely Available from IEEE
  • On the derivation of angular glint from backscattering measurements of echo relative phase

    Page(s): 1 - 7
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (1142 KB)  

    From the backscattering measurements of a two-point target consisting of two spheres, we discovered that the backward angular glint can be obtained by evaluating the derivative of the measured data of backscattering echo relative phase versus incident angles. A representative vector model of N-point target consisting of N anisotropic point scatterers has been proposed to reveal the inherent law implied by the experimental phenomenon. Analytical arguments then demonstrate that, under certain conditions the equivalence can be found between the backward angular glint and the derivative of backscattering echo relative phase with respect to incident angles. This work is of particular value in deriving angular glint from backscattering measurement in the case of no bistatic scattering measurement capability. View full abstract»

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  • Modeling of selective availability for global positioning system

    Page(s): 9 - 14
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    To degrade location accuracy for unauthorized GPS users, US government applied Selective Availability (SA) to Global Positioning System (GPS). In this paper we discuss an anti-SA approach to improve location accuracy which is very important in landing position, and then we derived the SA error by eliminating almost all other errors including ionospheric and tropospheric time delays and clock errors both in satellites and in receiver, etc. By means of the system identification theory, an SA error, an SA error model with the second-order Gauss-Maukov stochastic process was derived and simulated. With the selected parameters of the stochastic process, the simulation results show that there is the excellent agreement between the simulated SA error model and that of really applied in GPS system. View full abstract»

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  • Adaptive multisensor tracking fusion algorithm for air-borne distributed passive sensor network

    Page(s): 15 - 23
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (1404 KB)  

    Single passive sensor tracking algorithms have four disadvantages: bad stability, long dynamic time, big bias and sensitive to initial conditions. So the corresponding fusion algorithm results in bad performance. A new error analysis method for two passive sensor tracking system is presented and the error equations are deduced in detail. Based on the equations, we carry out theoretical computation and Monte Carlo computer simulation. The results show the correctness of our error computation equations. With the error equations, we present multiple “two station” fusion algorithm using adaptive pseudo measurement equations. This greatly enhances the tracking performance and makes the algorithm convergent very fast and not sensitive to initial conditions. Simulation results prove the correctness of our new algorithm. View full abstract»

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  • Investigating the synthesis of RBF networks

    Page(s): 25 - 29
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    The approximation capability of RBF networks is investigated using a test function and a fixed finite number of training data. The test function used allows to confirm the recently introduced concept of second derivative dependent placement of RBF centers. Different Gaussian RBF networks are trained varying the width and the number of centers (number of hidden units). The dependence of the approximation error on these network parameters is studied experimentally. View full abstract»

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  • Search algorithm for determining the range of the possible collision of conver polygons

    Page(s): 31 - 42
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    Let P = (P0, P1, …, Pn−1) and Q = (q0, q1, …, qm−1) be two arbitrary convex polygons in plane. In this paper, the author studies the problems of how to quickly determine their possible collision range and movable range. In the paper, a new sufficient and necessary condition for deciding possible collision is proposed, and the basic characters of the oblique supporting lines are investigated, and on these grounds the problem to determine the possible collision range is transformed into that of searching the supporting points on the sets of convex polygon vertexs. Using the strategy of searching simultaneously the sets of vertexes of P and Q, the author constructs the fast algorithm for finding the supporting points, the time-complexity of which is O(log2(m + n)). Based on these results, the algorithms to quickly determine the range are given, which possess the time-complexity of O(log2(m + n)). View full abstract»

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  • A partial parallel airport gate assignment supported by a knowledge-based system combined with mathematical programming

    Page(s): 43 - 61
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    The gate assignment at an airport is one of the major activities in airport operations. With the increase of passenger traffic volumes and the number of flights, the complexity of this task and the factors to be considered have increased significantly, and an efficient gate utilization has received considerable attention. For overcoming the shortcomings of previous gate assignment approaches, this paper presents a partial parallel gate assignment approach, by which more factors concerning aircraft and gates can be considered at the same time. This paper also presents the method of using a knowledge-based system combined with a mathematical programming method for getting an optimized feasible assignment solution. By this way, it is more easily to get the solution that satisfies both the static and dynamic situations, and thus it may adapt well to meet the needs of actual use to real-time operations. An experimental prototype has been implemented, and a case study is presented at the end of the paper. View full abstract»

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  • A simulation model for mixing traffic flow at an intersection

    Page(s): 63 - 68
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    This paper will develop a model simulation mixing traffic flow in the signal control intersection. Applying the model, the schemes of traffic channeling and controlling in the typical intersection are analyzed and optimized and the optimal scheme make the average stop frequency be reduced by 31.8% and average stop time be reduced by 27.7%. View full abstract»

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  • Some techniques for solving ordinary differential equations with discontinuities in real-time simulation

    Page(s): 69 - 80
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    This paper discusses some techniques for treating discontinuities of the right-hand functions of ordinary differential equations (ODEs) in real-time digital simulation (RTDS). The numerical experiments show that these techniques are effective. View full abstract»

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  • Instructions to authors

    Page(s): 1
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    Freely Available from IEEE

Aims & Scope

Journal of Systems Engineering and Electronics reports the latest developments and achievements in both theoretical and practical aspects of systems engineering, electronics and related research areas.

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Professor Rong Shi
Journal of Systems Engineering and Electronics