2001 CIE International Conference on Radar Proceedings (Cat No.01TH8559)

15-18 Oct. 2001

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  • 2001 CIE International Conference on Radar Proceedings (Cat No.01TH8559)

    Publication Year: 2001
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    Freely Available from IEEE
  • Novel scheme for inverse synthetic aperture radar (ISAR) imaging data compression

    Publication Year: 2001, Page(s):658 - 661
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (245 KB) | HTML iconHTML

    The characteristics of the inverse synthetic aperture radar (ISAR) imaging data are fully analyzed from the view of complex image compression and the corresponding compressing method, Compression of AMplitude and Phase (CAMP) scheme for the phase history data, is proposed and verified by the real ISAR data. View full abstract»

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  • Author index

    Publication Year: 2001, Page(s):1196 - 1202
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    Freely Available from IEEE
  • An efficient interference canceler

    Publication Year: 2001, Page(s):698 - 702
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (298 KB) | HTML iconHTML

    This paper deals with adaptive interference cancellation in the presence of array imperfections and beam pointing error. A new interference canceler with robust capabilities is proposed. This interference canceler first obtains the modified interference subspace (MIS) by employing the covariance differencing technique, then it obtains the projection vector of the steering vector of the desired sig... View full abstract»

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  • Application of UWB-radar in measurement of the depth

    Publication Year: 2001, Page(s):1124 - 1127
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (165 KB) | HTML iconHTML

    In this paper, pulse radar is used for highway technology. A 2D FDTD model is used to simulate the behavior of such a wideband radar system. According to the numerical results, the depth of the asphalt above the cement can be decided. The optimal distance of the transmitter/receiver unit has is also discussed. Thus, through analyzing the data returning to the receiver, we may ensure that the highw... View full abstract»

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  • Analysis of a nonsinusoidal radar signal and the formation of it's coded pulses

    Publication Year: 2001, Page(s):510 - 514
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB) | HTML iconHTML

    This paper analyses a nonsinusoidal radar signal, presents a programmable coded pulse (PCP) design scheme for generating a complex radar pulse signal and puts it into implementation. It is shown that the system implemented through this scheme can produce an arbitrary combination code pulse wave. Therefore this scheme provides a new train of thought and method for the design and research of a compl... View full abstract»

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  • Beam sharpening via multikernel deconvolution

    Publication Year: 2001, Page(s):693 - 697
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (438 KB) | HTML iconHTML

    Observation of physical phenomena are made by means of sensors which modify the incoming signals, this modification commonly being modeled by linear convolution with a sensor kernel. This modification limits the resolution that one obtains of the observed objects and brings about the need to reverse the convolution and extract a better object description. We examine a deconvolution problem that is... View full abstract»

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  • Study on multitarget tracking algorithm in passive cross location systems

    Publication Year: 2001, Page(s):1119 - 1123
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (273 KB) | HTML iconHTML

    When the coordinates of the target are obtained by direction-finding location through multiple passive sensors, the associated bearing measurements must be the same time detection of these sensors. But these sensors may have different sampling intervals, and the time of these sensors beginning to receive the target signal may be also different. In this case, the first problem one must solve in dir... View full abstract»

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  • A 3 mm-wave battlefield surveillance radar for the mini-UAV

    Publication Year: 2001, Page(s):154 - 157
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (179 KB) | HTML iconHTML

    This paper describes the configuration, operation principles and the performance of battlefield surveillance radar for the mini-UAV (unmanned vehicle). It is a light-weighted, coherent pulse-Doppler radar, which operates in both high resolution ground mapping (HRGM) and moving target detection (MTD) modes. The transmitting pulse power of the radar is 35 W, while the range resolution is 4.5 m, and ... View full abstract»

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  • Experimental study of ultra-wideband low sidelobe reflector antenna with shaped beam

    Publication Year: 2001, Page(s):194 - 197
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (245 KB) | HTML iconHTML

    An experimental study of an ultra-wideband low-sidelobe reflector antenna with shaped beam is presented in this paper. The results show that the antenna has excellent electric performance in S-band with bandwidth greater than 25%; the average of peak sidelobes in the horizontal plane and VSWR are less than -31 dB and 1.23 respectively. In the vertical plane the patterns have super-csc2 ... View full abstract»

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  • Adaptive beamforming for Doppler signal

    Publication Year: 2001, Page(s):688 - 692
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (230 KB) | HTML iconHTML

    A small number of samples and system errors can degrade the performance of adaptive arrays, particularly when the input signal-to-noise ratio (SNR) is large. A direct signal cancellation method to estimate the interference-noise covariance matrix which increases the SINR by using the desired signal Doppler information is proposed. It has the advantages of eliminating the problem of signal cancella... View full abstract»

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  • Analyses of pattern function of the DBF in non-uniform subarrays and a modified weighting method

    Publication Year: 2001, Page(s):1083 - 1087
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (305 KB) | HTML iconHTML

    The characteristics of the pattern function of a DBF (digital beamformer) composed of subarrays are analysed and a condition for the formation of grating lobes is given. For the design of a DBF, some conventional weighting methods, e.g., Hamming weighting, cosine-squared weighting and cosine-cubed weighting, are only suitable for a uniform array directly composed of array elements. We modify these... View full abstract»

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  • Method of resolving multiple jammers for passive monopulse radar

    Publication Year: 2001, Page(s):1115 - 1118
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (203 KB) | HTML iconHTML

    This paper presents a method to resolve multiple jammers within the mainlobe of a passive monopulse radar. First, monopulse radar response to frequency-modulated noise jammers is discussed. By selecting receiver bandwidth properly jamming pulses (receiver output) are separated. Then instantaneous angles of arrival of the jammers are measured. Finally, these angles can be resolved by a statistical ... View full abstract»

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  • Multi-sensor-systems at mm-wave range for automotive applications

    Publication Year: 2001, Page(s):150 - 153
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (262 KB) | HTML iconHTML

    The concept of an automotive radar sensor and its design details in the 61 GHz ISM band are introduced. The sensor is capable of measuring several important parameters of automobile driving dynamics and boundary conditions at a time, e.g., velocity, pitch angle, distance to ground and condition of the road surface. The coherent system consists of two bistatically oriented microwave frontends with ... View full abstract»

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  • The orthogonal weighted algorithm for GPS receiver anti-jamming

    Publication Year: 2001, Page(s):1190 - 1194
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (293 KB) | HTML iconHTML

    An algorithm for GPS receivers to calculate the optimal weights is proposed, which are orthogonal to all the steering vectors of jamming in the weight space. The optimal weights is obtained directly by the multiple signal classification (MUSIC) algorithm. It is suitable for both strong interference and weak ones. A comparison between this algorithm and the power-inversion algorithm has been done. ... View full abstract»

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  • A limited scan phased array system in circular grid configuration

    Publication Year: 2001, Page(s):210 - 213
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (251 KB) | HTML iconHTML

    When the spacing between the radiating elements of a phased array antenna is more than one wavelength, unwanted grating lobes are generated in real space besides the main beam, and their level can climb so high that the antenna cannot work normally especially when the spacing becomes even larger. Several engineering methods which are very effective in suppression of these grating lobes are introdu... View full abstract»

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  • Estimating the Doppler frequency rate for spaceborne SAR data with a new approach

    Publication Year: 2001, Page(s):627 - 630
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB) | HTML iconHTML

    The paper presents a new method to estimate the spaceborne SAR Doppler frequency rate. A polynomial model is set up to demonstrate the azimuth signal of the spaceborne SAR and converts frequency rate estimation to frequency estimation through difference processing. With the analysis of estimation accuracy and computational complexity, the method is proved to be able to reduce the burden of computa... View full abstract»

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  • Motion compensation for spotlight SAR mode imaging

    Publication Year: 2001, Page(s):938 - 942
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (242 KB) | HTML iconHTML

    In this paper the phase errors from motion errors in spotlight synthetic aperture radar (SAR) are studied, and then are decomposed into two kinds, space-invariant error caused by translation and space-variant error by rotation. Computer simulations show the above mentioned errors and their corresponding damage on spotlight SAR images. Based on the above analysis the prominent point processing (PPP... View full abstract»

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  • Spur reduction in truncation for DDS phase accumulators

    Publication Year: 2001, Page(s):189 - 193
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (245 KB) | HTML iconHTML

    Direct digital synthesizer (DDS) is a new technique for frequency synthesis, which has the advantage of fine frequency resolution and fast switching speed, but has a high level of spurious frequencies. This paper mainly describes several methods for reducing the parasitic sidelobe level in phased arrays and uses them for randomizing; the phase errors to improve DDS under the condition of phase tru... View full abstract»

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  • Hypotheses testing data fusion in a passive cross location system

    Publication Year: 2001, Page(s):748 - 752
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB) | HTML iconHTML

    Eliminating the false intersection (deghosting) is a difficult problem in a passive cross location system. Using a decentralized decision fusion topology, a new deghosting algorithm derived from hypotheses test theory is developed, which is based on the geometrical position difference between ghosts and true targets relative to the deghosting sensor. Simulation results show the feasibility of the ... View full abstract»

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  • Radar waveform design and target detection using wavelets

    Publication Year: 2001, Page(s):506 - 509
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB) | HTML iconHTML

    The projection of the conventional radar waveform in wavelet space is comparatively complex, which complicated the wavelet decomposition of the radar waveform. A novel radar waveform design method is proposed. The proposed approach uses the wavelet function of a specific scale as the waveform and thus the inter-dependency of the wavelet coefficients in different subspaces is reduced. Better detect... View full abstract»

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  • Universal high speed raw radar data recorder

    Publication Year: 2001, Page(s):653 - 657
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB) | HTML iconHTML

    To develop and optimize modern radar, it is necessary to carry on very intensive tests using both simulated and recorded raw data. The progress in commercial off-the-shelf (COTS) components, especially the increase of capacity and speed of cheap hard discs equipped with IDE ULTRA ATA 66 or 100 interface, make it possible to build very cheap and versatile high speed data recorders. The paper presen... View full abstract»

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  • Maneuvering weak target tracking using wavelet transform

    Publication Year: 2001, Page(s):609 - 613
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    The difficulty for tracking maneuver target is to decide whether a maneuver occurs and when the target begins to maneuver. Since target tracking is a real. time problem, the crucial factor is to detect the target maneuver as accurately and quickly as possible. A new approach for the target maneuver detection is presented, especially for the weak target maneuver detection in heavy noise. The algori... View full abstract»

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  • Clutter real time simulations of the airborne phased-array radar

    Publication Year: 2001, Page(s):920 - 923
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    An implementation method of clutter simulations in a new airborne phased-array radar video simulator is discussed. The means of zero memory nonlinearity (NMNL) is adopted to simulate clutter, whereby let Gaussian white noise pass through a low-pass filter to get the power spectral characteristics, then NMNL is used to achieve the desired amplitude distribution characteristics. The simulated clutte... View full abstract»

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  • Satellite image compression using a bottleneck network

    Publication Year: 2001, Page(s):683 - 687
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB) | HTML iconHTML

    The paper presents a simple neural network suitable for a large size image compression, such as a satellite image. The defined network of N×M×N neurons represents the input, hidden, and output layers respectively. Since M≪N, then this type of structure is referred to as a bottleneck neural network. The new training method and the robustness of the network is satisfied, when this net... View full abstract»

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