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Radar Conference, 2001. Proceedings of the 2001 IEEE

Date 3-3 May 2001

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Displaying Results 1 - 25 of 85
  • Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)

    Publication Year: 2001
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    Freely Available from IEEE
  • Conference Author Index

    Publication Year: 2001, Page(s):463 - 464
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  • A numerical waveform design approach to decorrelate target and noise

    Publication Year: 2001, Page(s):448 - 450
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB) | HTML iconHTML

    Traditional radar detection relies on predefined models for assessment of probability of detection and probability of false alarm. These models assume a target uncorrelated with clutter or other sources of interference. This assumption concerning decorrelation between the target and interference is not strictly true. We propose an iterative approach to design “optimal” waveforms that m... View full abstract»

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  • Performance comparison of fast-scan GMTI/STAP architectures

    Publication Year: 2001, Page(s):252 - 257
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB) | HTML iconHTML

    This paper presents a study on multibeam radar architectures to provide wide-area fast-scan ground moving target indicator (GMTI) coverage. The minimum dwell time of a GMTI radar system is often determined by the Doppler processor. The revisit rate can be lowered, while still meeting dwell time constraints, by using multibeam techniques to cover more area in each dwell. The two multibeam technique... View full abstract»

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  • Families of waveforms with good auto and cross ambiguity properties

    Publication Year: 2001, Page(s):138 - 140
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB) | HTML iconHTML

    We address the problem of constructing frequency hop pulse trains for use in multiuser radar and sonar systems. We suggest a new construction of a family of frequency hop waveforms with nearly ideal autoambiguity function and low crossambiguity properties across the entire family of waveforms View full abstract»

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  • Processing of multi-aperture SAR to produce fine-resolution images of arbitrarily large extent

    Publication Year: 2001, Page(s):451 - 456
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (668 KB) | HTML iconHTML

    The spatial extent that can be accurately imaged by a synthetic aperture radar (SAR) is unfortunately limited. This restriction results from the fact that the number of independent pixel estimates produced by a SAR is constrained by the number of independent measurements that it collects. The solution is to increase the number of independent sensor measurements, without modifying sensor resolution... View full abstract»

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  • GMTI performance of ΣΔ-STAP for a forward-looking radar

    Publication Year: 2001, Page(s):258 - 263
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB) | HTML iconHTML

    The GMTI performance of ΣΔ-STAP for a forward looking phased array radar is analyzed using the simulation tool RLSTAP. ΣΔ-STAP processes the returns from sum and difference antenna channels. When used in conjunction with partially adaptive STAP methods ΣΔ-STAP is shown to achieve good GMTI performance View full abstract»

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  • A novel threshold optimization for distributed OS-CFAR of multistatic radar systems by using the genetic algorithm

    Publication Year: 2001, Page(s):275 - 278
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB) | HTML iconHTML

    Distributed order statistics constant false alarm rate (OS-CFAR) detection techniques are important for nonstationary observation with varying weak narrowband random signals. However, it is very difficult to choose system parameters to obtain optimal threshold values because of the nonlinear property of the distributed OS-CFAR detection system. This paper provides a novel solution based on an effe... View full abstract»

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  • Bistatic radar denial/embedded communications via waveform diversity

    Publication Year: 2001, Page(s):41 - 45
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB) | HTML iconHTML

    Use of an interferometer along with a host radar is proposed for simultaneously achieving coherent reference denial and embedded communications. To prevent self-jamming, spatial orthogonality is achieved between the interferometer antenna pattern and main beam of the host radar. Costas and orthogonal frequency division multiplexing (OFDM) signals are suggested for the host radar and interferometer... View full abstract»

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  • Fast converging robust adaptive arrays

    Publication Year: 2001, Page(s):216 - 221
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB) | HTML iconHTML

    A pseudo-median canceller is introduced as the canonical processor of a robust adaptive array method which significantly reduces the deleterious effects of non-Gaussian, real-world noise and interference (outliers) on typical array performance metrics such as (normalized) output noise power residue and signal-to-interference-plus-noise ratio (SINR). In addition, the proposed structure offers natur... View full abstract»

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  • Netted radar sensing

    Publication Year: 2001, Page(s):23 - 26
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB) | HTML iconHTML

    We consider how networks of radar sensors can offer a counter to stealth technology whilst simultaneously providing more detailed information for improved target classification. Specifically, it is shown how multiple independent sensors can provide an energetically more efficient collector of radar scatter. Further, the relative merits of non-coherent and coherent dependent networks are discussed ... View full abstract»

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  • Target-to-clutter contrast enhancement using radar Doppler polarimetry

    Publication Year: 2001, Page(s):321 - 325
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB) | HTML iconHTML

    The connection between Doppler and polarimetric characteristics of targets is studied. It is shown that the Doppler polarimetric formalism provides more complete radar object description. These conclusions are supported by the model of simple compound object as well as by the radar observations of ground clutter. It is also shown that the clutter suppression which is based on Doppler polarimetric ... View full abstract»

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  • Signal processing of ground penetrating radar using super resolution technique

    Publication Year: 2001, Page(s):300 - 305
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB) | HTML iconHTML

    Ground penetrating radar (GPR) using electromagnetic pulse requires high resolution due to its narrow bandwidth nature. The rising requirement for high resolution lead to specific demands for improved prediction methods, all requiring many aspects to be examined. The application of the super resolution method MUSIC (multiple signal classification) algorithm and FFT (fast Fourier transform) are exa... View full abstract»

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  • Chaotic phase code for radar pulse compression

    Publication Year: 2001, Page(s):279 - 283
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB) | HTML iconHTML

    This paper presents a novel binary phase coding scheme for radar pulse compression, which is derived from the logistic-map equation in the chaotic theory. The proposed logistic-map-based binary phase code (LMBPC) makes it feasible to achieve superior performance in detection range. The logistic-map equation in the chaotic theory is range resolution and Doppler tolerance simultaneously. The propert... View full abstract»

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  • Experimental results for adaptive radar imaging in a wide angular sector

    Publication Year: 2001, Page(s):326 - 331
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB) | HTML iconHTML

    We investigate experimentally an adaptive imaging approach, namely that of a synthetic wideband, stepped CW transmitter and a multichannel adaptive array for receiving backscattered energy from short range objects in a full +/-90 degree field of view. The method is a hybrid one, using conventional Fourier processing for range and is adaptive in angle. The 12-element linear array that was construct... View full abstract»

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  • Modeling imprecise detection parameters as fuzzy numbers for a Rician target in Rayleigh background

    Publication Year: 2001, Page(s):135 - 137
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB) | HTML iconHTML

    The performance of a radar detector may become inaccurate when key parameters of the system are imprecise. Imprecise parameters are modeled here as fuzzy numbers. The fuzzy integrator detector is constructed for a Rician target in Rayleigh background. Results indicate that the precision of the detection performance decreases as parameter imprecision increases. The false alarm rate is particularly ... View full abstract»

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  • Wide-angle ISAR passive imaging using smoothed pseudo Wigner-Ville distribution

    Publication Year: 2001, Page(s):363 - 368
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB) | HTML iconHTML

    We are investigating passive radar imaging of aircraft using reflected TV signals. UHF-band ISAR imaging requires wide-angle data to produce good cross-range resolution. We show that direct Fourier reconstruction (DFR) causes degradation of the reconstructed image due to aspect-dependent scattering. We find that a smoothed pseudo Wigner-Ville distribution (SPWVD) applied in the cross-range directi... View full abstract»

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  • MSAG based MAE-UAV active array antenna

    Publication Year: 2001, Page(s):393 - 397
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (760 KB) | HTML iconHTML

    This paper summarizes the key enabling technologies developed during a three-year effort to design and demonstrate the advanced performance of a multi-function self-aligned gate (MSAG) MMIC-based MAE-UAV active array antenna. The antenna system was developed as prototype for future SATCOM and SAR antennas to be used aboard unmanned autonomous vehicles (UAV). This effort culminated in 1998 with a h... View full abstract»

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  • A general signal processing algorithm for MTI with multiple receive apertures

    Publication Year: 2001, Page(s):315 - 320
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB) | HTML iconHTML

    Moving target indication (MTI) is demonstrated for general antenna arrays, especially sparse 3D arrays. The framework for space-time adaptive processing (STAP) is generalized to include frequency (fast-time) data and array elements offset in cross track dimensions. The degrees of freedom (rank) needed to represent clutter are derived for general systems. The clutter rank compared to the number of ... View full abstract»

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  • Test results from the AN/APY-6 SAR/GMTI surveillance, tracking and targeting radar

    Publication Year: 2001, Page(s):13 - 17
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB) | HTML iconHTML

    The AN/APY-6 is an X-band radar developed by Northrop Grumman under ONR (Office of Naval Research) sponsorship. It was developed to provide all-speed target detection, location, tracking, imaging and exploitation. It was installed in a USA Navy NP-3 aircraft in July 1999 and continues to undergo testing and demonstration in the NP-3. This paper presents test results in the form of SAR, GMTI and tr... View full abstract»

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  • Space-time processing for airborne high range resolution phased array radar

    Publication Year: 2001, Page(s):264 - 269
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB) | HTML iconHTML

    This paper considers the clutter suppression and feature extraction of multiple moving targets for airborne high range resolution (HRR) phased array radar. We show how to use a vector autoregressive (VAR) filtering technique to suppress the clutter for HRR radar data, then a relaxation-based multiple moving target to demonstrate the effectiveness of the algorithm View full abstract»

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  • Effects of various image enhancement techniques on FOPEN data

    Publication Year: 2001, Page(s):87 - 92
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB) | HTML iconHTML

    An investigation of FOPEN target discrimination performance is summarized using UHF SAR data gathered at Grayling, MI by the USA Navy's P-3 SAR Sensor. The fully polarimetric data are processed using polarimetric whitening; superresolution processing is then applied to enhance the resolution of the whitened data. Several superresolution approaches are investigated and target discrimination perform... View full abstract»

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  • Ambiguity analysis for pulse compression radar using Gold code sequences

    Publication Year: 2001, Page(s):111 - 116
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB) | HTML iconHTML

    This paper presents analytic, simulation, and measured results of using Gold sequences for radar pulse compression coding. Gold-coded waveform performance is characterized using the ambiguity function diagram, synonymous with matched filtering performance. Results indicate Gold-coded waveforms offer significant improvement in radar clutter suppression, resolution, and unambiguous range properties View full abstract»

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  • Selection of the radar waveform from tracking considerations

    Publication Year: 2001, Page(s):246 - 251
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB) | HTML iconHTML

    The conventional approach for tracking system design is to treat the sensor and tracking subsystems as completely independent units. However, the two subsystems can be designed jointly to improve system (tracking) performance. It is known that different radar signal waveforms result in very different resolution cell shapes (for example, a rectangle versus an eccentric parallelogram) in the range/r... View full abstract»

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  • Ocean wave observation by CW mm-wave radar with narrow beam

    Publication Year: 2001, Page(s):398 - 403
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB) | HTML iconHTML

    A new ocean wave spectra observation method applied to intermittent back specula reflecting signal obtaining from a narrow radio beam spot on the water wave surface is proposed. The method uses a shipborne BBM CW mm wave Doppler radar with narrow beam. The wave spectra and velocity component are directly obtained from the received Doppler signal. Moreover the wave traveling direction and wave vect... View full abstract»

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