Associating microwave radar tracks with relocatable over-the-horizon radar (ROTHR) tracks using the advanced tactical workstation

Torrez, William C.; Yssel, W.J.

doi:10.1109/acssc.1998.750937

Cited by 4 publications

(1 citation statement)

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“…One way to tackle the problem above is using reference sources. The reference sources may include HF beacons or transponders [23,24], terrain features (e.g., coastlines, islands and mountains) [25][26][27][28][29], microwave radars [30], and the position information of cooperating targets, such as airliners equipped with automatic dependent surveillancebroadcast (ADS-B) and ships equipped with automatic identification system (AIS). While using the reference sources in CR, their locations in the ground coordinates are assumed to be known.…”

Section: Introductionmentioning

confidence: 99%

An Improved Coordinate Registration for Over-the-Horizon Radar Using Reference Sources

et al. 2021

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In the target localization of skywave over-the-horizon radar (OTHR), the error of the ionospheric parameters is one main error source. To reduce the error of ionospheric parameters, a method using both the information of reference sources (e.g., terrain features, ADS-B) in ground coordinates and the corresponding OTHR measurements is proposed to estimate the ionospheric parameters. Describing the ionospheric electron density profile by the quasi-parabolic model, the estimation of the ionospheric parameters is formulated as an inverse problem, and is solved by a Markov chain Monte Carlo method due to the complicated ray path equations. Simulation results show that, comparing with using the a prior value of the ionospheric parameters, using the estimated ionospheric parameters based on four airliners in OTHR coordinate registration process, the ground range RMSE of interested targets is reduced from 2.86 to 1.13 km and the corresponding improvement ratio is up to 60.39%. This illustrates that the proposed method using reference sources is able to significantly improve the accuracy of target localization.

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Section: Introductionmentioning

confidence: 99%

An Improved Coordinate Registration for Over-the-Horizon Radar Using Reference Sources

et al. 2021

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Over-the-horizon radar surveillance sensor fusion for enhanced coordinate registration

Torrez

Yssel

1999

1999 Information, Decision and Control. Data and Information Fusion Symposium, Signal Processing and Communications Symposium A

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Redundant data from independent over-thehorizon radar systems can increase track accuracy by providing more independent "looks" at the target. With proper geometry, complementary radar system can aid in resolving uncertainties in the coordinate registration through the various ionospheric modes. Systematic positional differences between tracks from the separate radars can be used to improve the estimation of ionospheric heights. In operational systems, targets are tracked by multiple over-thehorizon radars in overlapping coverage areas. In this paper, we consider the case of two over-the-horizon radars. The main algorithm is designed to hand-off range bias errors from one radar's ionospheric mode to a second radar. It is expected that the resultant algorithmic development based on the work described in this paper will improve track positional accuracy by more than 50%.

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An application of generalized least squares bias estimation for over-the-horizon radar coordinate registration

Torrez

Blasch

2000

Proceedings of the Third International Conference on Information Fusion

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Associating microwave radar tracks with relocatable over-the-horizon radar (ROTHR) tracks using the advanced tactical workstation

Cited by 4 publications

References 1 publication

An Improved Coordinate Registration for Over-the-Horizon Radar Using Reference Sources

An Improved Coordinate Registration for Over-the-Horizon Radar Using Reference Sources

Over-the-horizon radar surveillance sensor fusion for enhanced coordinate registration

An application of generalized least squares bias estimation for over-the-horizon radar coordinate registration

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