HF multipath passive single site radio location

Johnson, Richard L.; Black, Q. R.; Sonsteby, A. G.

doi:10.1109/7.272268

Cited by 14 publications

(9 citation statements)

References 19 publications

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“…10 Hough transforms of a measured delay-Doppler ridge assuming three different emitter velocities. 27 2.11 Delay-Doppler ridges for the three parameter sets suggested by Figure 2.10. The delay-Doppler ridges are nearly identical.…”

Section: 7mentioning

confidence: 99%

“…The delay-Doppler ridges are nearly identical. 27 2.12 Delay-Doppler ridges for the three parameter sets and a -30 degree receive azimuth. 28 3.1 Range and Doppler contours for a moving emitter.…”

Section: 7mentioning

confidence: 99%

“…These results are expanded to include sensor position uncertainty in [24], [25]. Single sensor localization techniques using reflection from the ionosphere are described in [26], [16], [27]- [29]. These techniques can be thought of as vertical triangulation [26], and the localization sensors are called single-site locators (SSL).…”

Section: Background Literaturementioning

confidence: 99%

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Passive localization of moving emitters using out-of-plane multipath

Coutts

2000

IEEE Trans. Aerosp. Electron. Syst.

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The purpose of this work is to establish how a moving emitter can be localized by a passive receiver through the use of out-of-plane multipath signals reflected by the terrain. This is a novel localization technique that assumes no a priori knowledge of the location of the multipath sources. The emitter parameters of range, heading, velocity, and altitude are estimated by exploiting the correlation between the direct-path signal and the delayed, attenuated, and Doppler modulated signals reflected by the terrain. Two basic assumptions about the terrain scattering properties lead to different maximum likelihood (ML) estimators of emitter parameters. The first assumption is that the terrain scattering is fundamentally homogeneous; in this case the ML estimator is found to have the structure of a timevarying FIR filter. The second assumption is that the terrain scattering is fundamentally inhomogeneous and dominated by a number of discrete scatterers. This assumption leads to a two-part estimator which first estimates the scattering parameters of azimuth, differential delay, and Doppler shift, and then estimates the emitter parameters using the scatterer parameter estimates. The Cramer-Rao lower bounds of the variances for each estimator are derived and used to study estimator performance for several scenarios. The proposed estimators are successfully demonstrated using field data collected at White Sands Missile Range during the DARPA/Navy Mountaintop program. Several extensions to the basic results are considered such as localizing pulsed and self-correlated emitters, multiple emitters, and the effects of receiver motion. in PREFACE The material presented in this report is identical to that in a dissertation submitted to Northeastern University, Department of Electrical and Computer Engineering, August 1997, in partial fulfillment of the requirements for the degree of Doctor of Philosophy. ACKNOWLEDGMENTS I would like to thank many individuals, at both Northeastern and Lincoln Laboratory, for their contributions toward the successful completion of this work. I would like to thank Mr. Gerard Titi first for suggesting this fruitful research topic and also, along with Dr. Steven Krich, for providing encouragement, and support including the computer resources that permitted me to work effectively at home while maintaining a full-time position at Lincoln Laboratory. I also wish to thank Dr. Kenneth Senne for many helpful suggestions during the preparation of my ASAP presentations on this material. I am deeply indebted to Prof. Ram Raghavan, my principal advisor, for many stimulating technical discussions and invaluable guidance on completing and writing up this work. Thanks also to committee members Dr.

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Section: 7mentioning

confidence: 99%

Section: 7mentioning

confidence: 99%

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Passive localization of moving emitters using out-of-plane multipath

Coutts

2000

IEEE Trans. Aerosp. Electron. Syst.

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“…In [2], a time of arrival (TOA) and CAOA based method is introduced without ionosphere. And in [7] a TDOA and direction of arrival (DOA) based passive geolocation method is also proposed with some real data results.…”

Section: Introductionmentioning

confidence: 99%

Passive TDOA and DOA based HF geolocation without ionosphere information

Wang¹,

Jiang²,

Razul

et al. 2015

2015 10th International Conference on Information, Communications and Signal Processing (ICICS)

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Conventional HF geolocation method based on ray tracing relies on strict requirement on ionosphere information while line-of-bearing based geolocation method and time difference of arrival (TDOA) based method require fine angular resolution and large aperture array. In practical applications, these methods will be subject to practical constraints, especially when operated in land-limited environment. This paper investigates a new approach of HF geolocation based on TDOA and direction of arrival (DOA) of multipaths, which can alleviate the strict requirements on ionosphere information and large aperture array. A nonlinear optimization problem is formulated based on the virtual path propagation model and solved by numerical optimization methods. Simulation studies are provided to illustrate the potential of the proposed method.

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“…Different methods are introduced by authors for target geo-location, However all these methods can be categorized as Triangulation (sometimes referred as Angle of Arrival -AOA) methods [4,5,6], hyperbolic (sometimes referred as Time Difference of Arrival -TDOA) methods [7,8], difference Doppler method [9,10], Single Site HF method [11,12], and a combination of two or three of these methods [13,14,15].…”

Section: Introductionmentioning

confidence: 99%

SAR processing To localize LPI radars

Hejazi

Norouzi

Nayebi

2014

2014 International Radar Conference

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In this paper a new passive imaging method is introduced that is mainly suitable for Geo-locating LPI radars. The method uses two Electronic Support (ES) receivers located on a fast moving platform (e.g. an airplane or a satellite). The proposed method has a high processing gain which makes it absolutely suitable against very weak LPI signals. It is also capable in radar location finding against complex radars and complicated electromagnetic environment.

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HF multipath passive single site radio location

Cited by 14 publications

References 19 publications

Passive localization of moving emitters using out-of-plane multipath

Passive localization of moving emitters using out-of-plane multipath

Passive TDOA and DOA based HF geolocation without ionosphere information

SAR processing To localize LPI radars

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