Proceedings of the 1997 IEEE National Radar Conference

13-15 May 1997

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  • Proceedings Of The 1997 IEEE National Radar Conference, May 13-15,1997, Syracuse, New York [front matter]

    Publication Year: 1997, Page(s):i - xvii
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    Freely Available from IEEE
  • An ultra-low sidelobe pulse compression technique for high performance radar systems

    Publication Year: 1997, Page(s):111 - 114
    Cited by:  Papers (6)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    A pulse compression technique based on deconvolution and linear prediction in the frequency domain is presented which offers approximately 20 dB improvement in time sidelobe performance compared to conventional matched filter and windowing techniques. The detection performance converges to that of a matched filter for weak signals, while the sidelobe level decreases to very low levels as a functio... View full abstract»

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  • Prevention of signal cancellation in an adaptive nulling problem

    Publication Year: 1997, Page(s):191 - 195
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (269 KB)

    Signal cancellation is a serious problem in adaptive nulling. The problem arises when the actual direction of arrival of the signal is slightly off the assumed direction of arrival. The adaptive algorithms consider the actual signal a jammer as the direction of arrival is not exactly specified. It is shown how to prevent signal cancellation when the direction of arrival is not known exactly. Multi... View full abstract»

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  • Proceedings of the 1997 IEEE National Radar Conference

    Publication Year: 1997
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    Freely Available from IEEE
  • A direct matrix approach to the adaptive nulling problem with multiple look directions utilizing the conjugant gradient method

    Publication Year: 1997, Page(s):284 - 288
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (278 KB)

    In adaptive nulling problems, signal cancellation can occur if the direction of arrival (DOA) of the signal of interest (SOI) is unknown and the desired look direction is slightly off the actual DOA. In this case, the signal is considered a jammer and nulled by the adaptive algorithms. Target returns from within a finite extent indicate the presence of a target. This paper investigates the additio... View full abstract»

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  • Accounting for the effects of mutual coupling in adaptive antennas

    Publication Year: 1997, Page(s):361 - 366
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (529 KB)

    This paper presents a method to account for the effects of mutual coupling in least squared error adaptive algorithms. The mutual coupling is quantized using the method of moments. The method of moments admittance matrix is used to compensate for the mutual coupling. View full abstract»

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  • Conference Author Index

    Publication Year: 1997, Page(s): 379
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    Freely Available from IEEE
  • A parametric multichannel detection algorithm for correlated non-Gaussian random processes

    Publication Year: 1997, Page(s):349 - 354
    Cited by:  Papers (52)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    This paper addresses the problem of adaptive multichannel signal detection in additive correlated non-Gaussian noise using a parametric model-based approach. The adaptive signal detection problem has been addressed extensively for the case of additive Gaussian noise. However, the corresponding problem for the non-Gaussian case has received limited attention. The additive non-Gaussian noise is assu... View full abstract»

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  • Configuration and performance analysis of space-time adaptive processor for airborne radar

    Publication Year: 1997, Page(s):343 - 348
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    The space-time adaptive processing (STAP) technique for airborne early warning (AEW) radar is investigated. First, the STAP configurations are put into four typical classes based on the different processing domain (space), which are the element-pulse domain configuration, beam-pulse domain configuration, element-Doppler domain configuration and the beam-Doppler domain configuration. Secondly, a un... View full abstract»

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  • Further results of ΣΔ-STAP approach to airborne surveillance radars

    Publication Year: 1997, Page(s):337 - 342
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    This paper presents some further results on the STAP approach using sum (Σ) and difference (Δ) beams, including the desired characteristics of the ΣΔ-beampatterns, comparison of the ΣΔ-STAP and ΣΔ-DPCA, and an evaluation of its performance for three different Δ beams. It is shown that: (a) ΣΔ-STAP is not sensitive to the sidelobe te... View full abstract»

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  • Wind detection in a microcosm: ship/aircraft environment sensors

    Publication Year: 1997, Page(s):246 - 251
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    One of the most demanding aspects of a Navy helicopter pilot's job is landing his aircraft on the flight deck of a pitching, rolling, heaving and yawing ship. The complex airwake velocity field associated with the ship and aircraft interface directly affects the pilot's ability to control the aircraft during takeoff, approach, hover, landing, and deck operations. Dynamic interface (DI) testing is ... View full abstract»

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  • Performance analysis of reduced-rank STAP

    Publication Year: 1997, Page(s):42 - 47
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    The space-time radar problem is well suited to the application of techniques that take advantage of the low-rank property of the space-time covariance matrix. In particular, it was shown that when the space-time covariance matrix is estimated from a dataset with limited support, reduced-rank methods outperform full-rank space-time adaptive processing (STAP). We study the application of several red... View full abstract»

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  • Algorithm development for an airborne real-time STAP demonstration

    Publication Year: 1997, Page(s):331 - 336
    Cited by:  Papers (8)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    A description of STAP algorithms used in the May 1996 Real Time Multichannel Airborne Radar Measurement (RT-MCARM) program is presented. The system collected and processed IF sampled data from 16 phased array radar receiver channels, performing IF to baseband conversion, Doppler processing, adaptive clutter cancellation, pulse compression, and formation of multiple receive beams within an intentio... View full abstract»

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  • Over-the-horizon radar surveillance of airfields for counterdrug applications

    Publication Year: 1997, Page(s):178 - 181
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Airfield surveillance utilizing over-the-horizon radar (OTHR) offers the opportunity to gather significant intelligence concerning activity levels at suspect drug smuggling airports. It also provides the potential to classify aircraft initially from observed takeoff data, which would be helpful in interdiction efforts. This paper discusses the radar signal components and signal processing techniqu... View full abstract»

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  • Improving practical space-time adaptive radar

    Publication Year: 1997, Page(s):48 - 53
    Cited by:  Papers (81)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    This paper discusses the incorporation of nonhomogeneity detection with space-time adaptive processing to improve the formation of adaptive weights in practical adaptive airborne radar. We examine the problem of improving interference covariance matrix estimation in real-world environments and discuss several approaches for integrating nonhomogeneity detection with space-time adaptive processing. ... View full abstract»

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  • High fidelity propagation modelling in real time

    Publication Year: 1997, Page(s):166 - 171
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    The growing threat of low-flying cruise missiles, and the increased importance of littoral operations, have made real-time high fidelity radar propagation modeling essential to the Navy. Traditional propagation models used within the Navy community are valid only for standard atmosphere and homogeneous sea environments. Newly available propagation models-such as the parabolic equation based variet... View full abstract»

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  • Improved over-the-horizon radar accuracy for the counter drug mission using coordinate registration enhancements

    Publication Year: 1997, Page(s):132 - 137
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    For the relocatable over the horizon radar (ROTHR) counter-drug radar system accurate knowledge of target position is an important part of the detection and interdiction of drug smuggling aircraft. An improvement in the radar's target track positional accuracy has been obtained by using external reference sources at known locations in the radar coverage area. Tracks formed on these reference sourc... View full abstract»

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  • A new statistical model of sea clutter from trials in Ku band

    Publication Year: 1997, Page(s):149 - 153
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    The modeling of sea clutter presents an important problem in radar system design since model selection often drives system parameter selection. In addition to the importance of this problem, a new characterization of sea clutter is warranted in order to attend the literature in this area. Measurements of sea clutter in the Ku band using linear polarization, at very low altitude and very high grazi... View full abstract»

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  • Non-Gaussian clutter modeling and application to radar target detection

    Publication Year: 1997, Page(s):240 - 245
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    The performance of a Gaussian receiver in non-Gaussian clutter is significantly inferior to that of an optimum receiver for the detection of weak targets. Knowledge of the clutter distribution is a key element to obtaining improved performance. This requires the specification of a suitable multivariate non-Gaussian probability density function (PDF) for the clutter. Spherically invariant random ve... View full abstract»

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  • Multichannel parametric models for airborne phased array clutter

    Publication Year: 1997, Page(s):72 - 77
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    Ground clutter is the dominant power contributor in most scenarios involving an airborne surveillance phased array radar. Further, ground clutter power is spread over a large region of the two-dimensional (Doppler and spatial) frequency plane, which complicates moving target detection. Conventional methods, such as joint- and factored-domain via sample matrix inversion, have been formulated to det... View full abstract»

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  • Space/time adaptive processing architecture implementations using a high performance scalable computer

    Publication Year: 1997, Page(s):325 - 330
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    Pre and post-Doppler STAP architectures are considered for a target implementation on an Analog Devices super-Harvard architecture (SHARC) based high performance scalable computer utilizing a MyrinetTM communications network. Mapping and partitioning tasks perform an initial feasibility and sizing analysis for an implementation which performs both architectures on the same hardware. Fur... View full abstract»

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  • Imaging of commercial aircraft by inverse synthetic aperture radar and their classification in a Near-Range Radar Network (NRN)

    Publication Year: 1997, Page(s):19 - 24
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    The Near-Range Radar Network is a sensor for the surveillance of the ground traffic on airports. It localizes targets, evaluates the vectors of velocity and classifies the targets. For the latter task microwave images of the moving objects obtained by the principle of inverse synthetic aperture radar (ISAR) are utilized. The most important processing steps are the range alignment and the pre-phase... View full abstract»

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  • An approach to control MTI filter order selections during search

    Publication Year: 1997, Page(s):7 - 12
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    Mobile, surface-based search radars contend with a variety of clutter conditions. Clutter spectral diversity is often chief among such variations. To address a range of possible clutter conditions, radars have employed a suite of selectable moving target indicator (MTI) waveforms. Among the useful waveform options is the order of the MTI filter. Low order MTI filters can be supported by just a few... View full abstract»

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  • Common aperture multiband radar (CAMBR)

    Publication Year: 1997, Page(s):143 - 148
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    The design for a new common aperture, multiband, wideband, multimode, phase array shipboard radar, capable of handling all ship self defense and close-in surveillance requirements, is presented. The radar simultaneously provides both 2D and 3D coverage and radar engagement functions using 3 radar bands that operate through a common aperture. In addition to a conventional set of waveforms, a unique... View full abstract»

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  • Real-time multichannel airborne radar measurements

    Publication Year: 1997, Page(s):138 - 142
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    This paper describes a series of airborne radar experiments that were performed using an active aperture digital beamforming phased array radar designed to demonstrate real time space-time adaptive processing on an Intel high performance computer View full abstract»

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