A new propagation prediction tool for earth-space geometries for the advanced refractive effects prediction system (AREPS)

Sprague, Richard; Babu, P. Srinivasa

doi:10.1109/milcom.2008.4753507

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…The initial version, which allowed refractive variations in height only, was modified to include range dependent variations in order to predict the effects of refractive ducting on earth-satellite propagation modes. With the addition of models for rain attenuation, gaseous absorption, and the effects of earth reflections, the new model is now capable of prediction of carrier signal strength in realistic refractive environments for analysis of satellite communication systems [3,4].…”

Section: Work Completedmentioning

confidence: 99%

EM Propagation & Atmospheric Effects Assessment

Barrios

Sprague²

2008

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Award Number: N0001408WX20406 http://areps.spawar.navy.mil/ LONG TERM GOALSDevelop electromagnetic propagation models, that perform equally well over land and sea and in the presence of anomalous propagation conditions for both surface and airborne emitters, for use in operational or engineering propagation assessment systems. OBJECTIVESDevelop an advanced unified hybrid radio propagation model based on parabolic equation and ray optics methods for both surface-based and airborne applications. This model is named the Advanced Propagation Model (APM) and is the model used in the Advanced Refractive Effects Prediction System (AREPS). Other objectives are to develop an earth-to-satellite propagation (with METOC) model, ESPM2, suitable for transition to the Advanced Refractive Effects Prediction System (AREPS) and the Naval Integrated Tactical Environmental Subsystem (NITES) 2 Redesign (N2R). The specific technical objectives are to modify the APM to model wideband sources for accurate characterization of the propagation channel for RF communications systems; and modify the ESPM2 to assess the impact on communication system performance of channel limitations imposed by propagation through the ionosphere.

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Section: Work Completedmentioning

confidence: 99%

EM Propagation & Atmospheric Effects Assessment

Barrios

Sprague²

2008

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“…However, the LQA table can be initialized according to environmental conditions and geographical location between different nodes, using tools such as AREPS or VOACAP, and its details are discussed in [15], [16], [17], [18].…”

Section: System Model Of Proposed Fh-ale Protocolmentioning

confidence: 99%

Improving the Performance of HF Radio Networks in Presence of Interference: Frequency Hopping Automatic Link Establishment

Haghbin

Khodaverdizadeh

Razzazi

2022

Preprint

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Automatic Link Establishment (ALE) is crucial in channel assignment and data exchange in HF radio networks. The time of link establishment and its quality are two main concerns in this criterion establishment. In jamming environments, the quality of the channels is seriously influenced by the jammer signals. Frequency Hopping (FH) approaches supports communication links to overcome the jamming impairments, and the traditional ALE algorithm can be made more stable by using this approach. This paper has developed ALE algorithms to automatically establish links to handle different jamming scenarios and establish robust links to exchange data with the proposed FH-ALE system. Besides, in the proposed algorithm, we have considered the time of link establishment to be almost identical to the current ALE scenario. Hence, in the normal channel condition, the throughput value is approximately identical in proposed and traditional cases. The simulation results represent the superiority of the proposed FH-ALE approach in jamming environments.

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“…The portion of this effort for the enhancement of modeling capabilities within the ESPM2 was completed in FY08 and was reported in the ONR FY08 Annual report and in [5,6].…”

Section: Work Completedmentioning

confidence: 99%

Modeling RF Digital Signals for Communications Applications

Barrios¹,

Gadwal²,

Sprague³

2009

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Develop electromagnetic propagation models, that perform equally well over land and sea and in the presence of anomalous propagation conditions for both surface and airborne emitters, for use in operational or engineering propagation assessment systems. OBJECTIVES Develop an advanced unified hybrid radio propagation model based on parabolic equation and rayoptics methods for both surface-based and airborne applications. This model is named the Advanced Propagation Model (APM) and is the model used in the Advanced Refractive Effects Prediction System (AREPS). Other objectives are to develop an earth-to-satellite propagation (with METOC) model, ESPM2, suitable for transition to the Advanced Refractive Effects Prediction System (AREPS) and the Naval Integrated Tactical Environmental Subsystem (NITES)-Next. The specific technical objectives are to modify the APM to model wideband sources for accurate characterization of the propagation channel for RF communications systems; and modify the ESPM2 to assess the impact on communication system performance of channel limitations imposed by propagation through the ionosphere. 1 Report Documentation Page Form Approved OMB No. 0704-0188 Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number.

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A new propagation prediction tool for earth-space geometries for the advanced refractive effects prediction system (AREPS)

Cited by 6 publications

References 7 publications

EM Propagation & Atmospheric Effects Assessment

EM Propagation & Atmospheric Effects Assessment

Improving the Performance of HF Radio Networks in Presence of Interference: Frequency Hopping Automatic Link Establishment

Modeling RF Digital Signals for Communications Applications

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