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Proceedings of the IEEE 1997 National Aerospace and Electronics Conference. NAECON 1997

14-17 July 1997

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  • IEEE 1997 National Aerospace and Electronics Conference NAECON 1997

    Publication Year: 1997, Page(s):0_3 - ix
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  • Maneuvering target tracking with non-Gaussian noise

    Publication Year: 1997, Page(s):890 - 895 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    Tracking a maneuvering target in a nonlinear interference environment has been discussed in some literature, and this paper considers the problems of tracking in the non-Gaussian noise environment and then tracking with multiple passive sensors. The method of target state estimation in this paper is a dynamic programming approach. Unlike the traditional method, the estimating problem is reduced to... View full abstract»

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  • On study of the application of ATM switches in netted-radar systems

    Publication Year: 1997, Page(s):970 - 974 vol.2
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    This paper introduces the application of ATM switching techniques in the communication of netted-radar systems. By analyzing the requirements for communication of a netted-radar system based on central processing station, it presents an ATM switch architecture similar to the client-server model. The ATM is considered to be the base of the broadband integrated services digital network (B-ISDN), whi... View full abstract»

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  • Data association in multitarget tracking with multisensor

    Publication Year: 1997, Page(s):884 - 889 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    One of the most important problem must be resolved in multitarget tracking with multisensor is the data association. It includes two folds: associating each observation of every sensor with each target, named scan association; associating-the track with track formed by different sensors, track association. There exist some difficulties in obtaining the models and in computing burden while tracking... View full abstract»

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  • A joint probabilistic data association algorithm for distributed multisensor system in jamming and low-RCS target environment

    Publication Year: 1997, Page(s):1002 - 1008 vol.2
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    Conventional target association and tracking techniques such as PDA and JPDA have very fine performance when the measurement acquired from sensors are perfect. However, when jamming and stealth techniques are widely used, it is very difficult for sensors to gain perfect measurements. Though a single sensor in a distributed sensors system might fail to acquire continually perfect measurements of lo... View full abstract»

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  • An exact conversion from an Earth-centered coordinate system to latitude, longitude and altitude

    Publication Year: 1997, Page(s):646 - 650 vol.2
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    Present combat systems are being upgraded to properly meet the new capabilities being developed against tactical ballistic missiles. The local coordinate systems are being upgraded to a global (WGS-84) coordinate system so that the correct exchange of threat information with other defending units can be done correctly and in a timely manner. This coordinate system upgrade is also used to properly ... View full abstract»

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  • The analysis of UWB SAR system error

    Publication Year: 1997, Page(s):964 - 969 vol.2
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    Focusing on the design of Ultra WideBand (UWB) Synthetic Aperture Radar (SAR) adopting deramping technology, the paper has studied the sources of the system error and the error tolerable levels. The system error classification is introduced according to the error's characteristics. The effect of each kind of error on UWB SAR system is presented. The paper has allocated the error budget with a UWB ... View full abstract»

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  • Identification of false targets in bistatic radar system

    Publication Year: 1997, Page(s):878 - 883 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    This paper presents an identification method of deception false targets in bistatic radar system. On the basis of the data correlation algorithm in bistatic radar system, the identifying rules of the real and the false targets are provided. The experimental simulations show that the method is effective to identify the false targets in EW View full abstract»

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  • Bandwidth allocation for real-time communication with LTPB protocol

    Publication Year: 1997, Page(s):920 - 925 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    The LTPB (Linear Token Passing Bus) protocol is a timed token protocol which has been designed by the SAE (Society of Automotive Engineers) as a LAN standard (AS4074) to support real-time communication in mission-critical systems. This paper studies the real-time characteristics with LTPB network. A bandwidth allocation scheme is proposed based on the traffic load balance of each node. The necessa... View full abstract»

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  • Study on the modeling of ultra-wide band radar echoes based on bispectrum

    Publication Year: 1997, Page(s):985 - 989 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    According to the features of the echoes of the ultra-wide band radar, this paper analyses the estimating effects of choosing the AR model, MA model and ARMA model based on bispectrum. It shows that ARMA. Model is much better than others. Simulations verify this result, also demonstrate the estimation precision has been improved. ARMA model parametric bispectrum estimation is very efficient to echo... View full abstract»

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  • A new method for automatic target recognition

    Publication Year: 1997, Page(s):1019 - 1024 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    In this paper, a new method is proposed by combining Mellin transform with bispectrum estimation algorithm to obtain robust radar airplane features with respect to noise contamination, changes in target position, minor changes in the target physical structure and so on. Furthermore, the nearest-neighbor (NN) rule is used for classification of radar targets. The results of computer simulation show ... View full abstract»

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  • Bistatic location and tracking based on intermittent data fusion

    Publication Year: 1997, Page(s):998 - 1001 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    This paper presents an algorithm based on delta TOA and azimuth measurements of the receiver station, together with the intermittent height data of the T/R station, for 3-D location and tracking of moving targets in a bistatic radar system. The location principle of the technique is analyzed in detail. In the condition of jamming it is sometimes difficult for a T/R station to transmit its informat... View full abstract»

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  • Discrete-time nonlinear observer design for reproducing angular rates along the third-axis of a spinning spacecraft using only two-axis measurements

    Publication Year: 1997, Page(s):638 - 645 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    This paper describes a new observer design method that allows us to estimate the angular rates along a vehicle's three principal axes. The method uses measurements from a single two-axis angular rate sensor (gyro) and determines the rates along the third axis by using a discrete-time nonlinear observer. Unlike conventional approaches where the equations governing vehicle motion (Euler's equations)... View full abstract»

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  • A new algorithm for detecting approximate vertical line in IR image

    Publication Year: 1997, Page(s):956 - 963 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1200 KB)

    This article-presents a new algorithm for detecting approximate vertical line in infrared image. Facing the special situation of detecting approximate vertical line, the algorithm takes specific steps to reduce the calculation cost. Three steps of this algorithm: edge detection, column-line connection and line extraction, are discussed in detail. The experimental result is also shown; the performa... View full abstract»

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  • An improved approach to the mutual coupling calculation of conformal array

    Publication Year: 1997, Page(s):873 - 877 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    This paper presents the general expressions of the mutual coupling from waveguide antenna elements on conformal surfaces. Based on direct integration method (DIM) and surface radiation pattern method (SRP), a novel improved surface radiation pattern (ISRP) method is suggested to the calculation of the mutual coupling. The results for the cylinder indicate that ISRP is more accurate than SRP and mo... View full abstract»

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  • Flight test demonstration of a flywheel energy storage system on the International Space Station

    Publication Year: 1997, Page(s):617 - 621 vol.2
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    The purpose of this program is to develop and demonstrate a flywheel energy storage device on the International Space Station (ISS) as a flight experiment. The longterm goal of this activity is to upgrade the energy storage ISS capability of ISS by replacing degraded batteries with flywheel energy storage units. Batteries wear out due to the normal charge/discharge cycling within 3-5 years of oper... View full abstract»

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  • The design of a PC-based, low-cost radar video signal generator

    Publication Year: 1997, Page(s):544 - 551 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    In the field of electronic warfare (EW), the development, test, validation, and debugging of radar warning receiver (RWR) hardware and software in the laboratory necessitates the simulation of radar threat signals. This requirement often leads to the development of expensive, high-fidelity, radio frequency (RF) simulators. Because they are expensive, they are scarce. They are also often hard to co... View full abstract»

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  • Aircraft target recognition using adaptive time-delay neural network

    Publication Year: 1997, Page(s):764 - 768 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    In this paper, an adaptive time-delay neural network (ATDNN) classifier based on high resolution radar down range profiles is proposed for use in aircraft target recognition, and a peak-based feature extraction technique for the range profiles is introduced. The results of experiments show that the average correct recognition rate of scale model aircrafts is 87.6% under the condition of three kind... View full abstract»

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  • Finding power station form FLIR image sequences

    Publication Year: 1997, Page(s):914 - 919 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    Large power stations are often chosen to be the target for missiles guided by an infrared seeker. An aimpoint finding algorithm is presented. Boiler images and straight lines of-chimneys and water cooling towers are taken as the reference feature objects for locating and keeping the aimpoint from long to short distances. Some experimental results are given to show the validity of the method View full abstract»

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  • Object-oriented design techniques applied to an integrated support station

    Publication Year: 1997, Page(s):676 - 682 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (500 KB)

    As technologies change, it often becomes necessary to upgrade large hardware/software multiprocessor-based systems. System upgrades are desirable because they can provide enhancements such as graphical user interfaces (GUI), increased system integrity, and improved software reliability. This paper discusses the application of object-oriented design techniques in the upgrade of the ALM-172A and ALM... View full abstract»

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  • Unbiased converted measurements for target tracking

    Publication Year: 1997, Page(s):1039 - 1041 vol.2
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    The accurate debiasing processing for the bias in the classical conversion mainly depends on the first and second statistics of the cosine of the bearing measurement errors. An unbiased conversion is presented in this paper. Some comparison between the new unbiased conversion with the previously offered debiased conversion is made View full abstract»

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  • A hybrid genetic/BP algorithm and its application for radar target classification

    Publication Year: 1997, Page(s):981 - 984 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    In this paper, a general purposed real valued genetic algorithm model is presented. For the training of neural networks, the hybrid algorithm integrates the real valued algorithm with the well known BP algorithm. It is used to the training of a feedforward neural networks for radar target classification based on 1-D range profile. 50 range profile samples from the real radar data of each of the th... View full abstract»

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  • Comparison of Doppler centroid estimation methods in SAR

    Publication Year: 1997, Page(s):1015 - 1018 vol.2
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    This paper compares five Doppler centroid estimation methods which are: energy balancing, matched-correlation maximum likelihood, correlation Doppler estimator (CDE) and sign Doppler estimator (SDE). Their estimation performances in raw data domain and image domain are studied. The computer simulation results are presented. ERS-1 raw data are also used to test the performances of every method View full abstract»

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  • Analysis of the returned signal model in bistatic radar systems

    Publication Year: 1997, Page(s):931 - 935 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    In this paper, taking the relativistic effect of high-velocity moving target into account, the Doppler shift, polarization deflection, reflection coefficient and phase delay of reflected electric field are analyzed rigorously under the assumptions that the incident signal to the target is a plane wave and the target is a perfect conductor plane. The analytic expressions are obtained. The present r... View full abstract»

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  • Signal design of UWB radar under clutter environment

    Publication Year: 1997, Page(s):994 - 997 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    In this paper, methods of the signal design of UWB (Ultra-Wideband) radar are probed. A adaptive optimum waveform design method is presented, this method can collected the energy of target scattering return, and improve the signal-to-noise ratio of receiving signal. Then, a Newton iterate method of nonlinear equation based on Neyman-Pearson Criterion, under the LEC conditions, is presented. Compar... View full abstract»

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