Study on the Prediction of Troposcatter Transmission Loss

Li, Lei; Wu, Zhensen; Lin, Leke; Zhang, Rui; Zhao, Zhenwei

doi:10.1109/tap.2016.2515125

Cited by 22 publications

(11 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Calculations of supporting median losses on the tropospheric scattering line were carried out in accordance with [9]. Support losses were used to conduct a comparative analysis of the correspondence of the results obtained with the proposed model with the reference loss data.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Although the fundamentals of the tropospheric scattering theory were developed in the middle of the last century, however, the development of over-horizon communication systems requires constant refinement of the known theoretical positions in accordance with new data on the nature of tropospheric scattering, atmospheric heterogeneities, the possibilities of new methods for calculating and estimating the propagation of radio waves [9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Troposcatter Communication Link Model Based on Ray-Tracing

Ilchenko

Kravchuk

Міночкін

et al. 2018

Information and Telecommunication Sciences

View full text Add to dashboard Cite

Background. At present, the demand in tropospheric over-the-horizon communication systems determines the inherent advantages of these systems over satellite and radio-relay systems of direct visibility, especially in combat and emergency situations. Although the fundamentals of the theory of tropospheric scattering were developed as early as the middle of the last century, the development of over-the-horizon systems requires constant refinements of known theoretical positions in accordance with new data on the nature of tropospheric scattering, atmospheric inhomogeneities, capabilities of new methods for calculating and estimating radio propagation. Objective. The aim of the work is to develop a radio link model of a trans-horizon tropospheric communication to study the possibility of controlling (improving) attenuation on such a route by changing the electrophysical characteristics of the environment, in particular atmospheric turbulence, or using artificial formations in the atmosphere. Methods. The created model is based on the Ray-tracing method. Results. A model of radio link losses in the over-horizon tropospheric communication (long-range tropospheric propagation) was developed, based on the ray-tracing technique in two versions: simplified, with homogeneous layers, and full, with a combination of blocks of structures of scattering spheres in each of the layers. A study of the possibility of improving attenuation along the tropospheric scattering pathway by regulating changes in the electrophysical parameters of inhomogeneities and artificial formations in the atmosphere was conducted. Conclusions. The convergence of the results of the simulation with the data obtained by known / traditional analytical models for calculating the losses on the tropospheric scattering path confirms the adequacy of the proposed model to the statistical data of the real losses in tropospheric scattering. The obtained results indicate that, for practical purposes, the accuracy of calculations of the loss characteristics is sufficient and that they can be used to form a tropospheric dispersion route with significantly reduced loss values by artificially adding a certain liquid or solid substance to the atmospheric heterogeneity.

show abstract

Section: Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Troposcatter Communication Link Model Based on Ray-Tracing

Ilchenko

Kravchuk

Міночкін

et al. 2018

Information and Telecommunication Sciences

View full text Add to dashboard Cite

show abstract

“…The troposcatter propagation loss has been continuously studied since the discovery of troposcattering phenomenon till recently [28,29]. In this work, our previous method [25] is used to model target deviation loss in horizontal and vertical.…”

Section: Troposcatter Propagation Deviation Lossmentioning

confidence: 99%

Fading correlation modelling for troposcatter microwave propagation in array antenna detection applications

Wang¹,

Wang²,

Wang³

et al. 2017

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

Microwave over‐the‐horizon (OTH) propagation through troposcatter is a valuable candidate for remote targets detection. Array antenna is promising to handle the contradiction between real‐time wide spatial coverage requirement and high antenna gain to capture weak scattering signal. The detection tactics and performance of array receiving systems are significantly affected by the fading correlation between array antennas, but there is no analytical study which considers the fading correlation in troposcatter passive sensing environments for uncooperative targets. In this study, an analytical method based on a scattering transfer function is proposed to derive the channel fading correlation, and the result is a function of transmitter deviation and spatial, temporal, frequency, angular separations of receiving array antennas in uncooperative troposcatter circumstances. In addition, the OTH troposcatter array receiving signal model is derived by exploiting the fading correlation to form the covariance structure of the received array signal, adding up with the signal transmission loss. Existing experimental results validate the derived fading correlations, and the simulation results validate the OTH passive detection performance based on the provided signal model.

show abstract

“…Zhang method has been accepted internationally as the agreed model. According to Zhang method [8], [9], the computational equation for the main propagation loss (dB) can be given by 0 c 30log 30log 10log 20log( 5) 4.34…”

Section: Propagation Lossmentioning

confidence: 99%

Research on Passive Troposcatter Location System

Liu¹,

Chen²,

Liu³

2019

RADIOENGINEERING

View full text Add to dashboard Cite

Electromagnetic (EM) wave of enemy radar propagated by troposcatter can be utilized for beyond lineof-sight (b-LoS) location. To provide theoretical basis for passive troposcatter location system, channel characteristics including propagation loss, refraction effect and multipath fading are analyzed. Ray tracing method improved by tropospheric model is employed to describe the refraction effect. Correlation coefficient on the basis of transfer function is deduced to evaluate multipath fading. According to troposcatter characteristics, maximum operating range is estimated, cooperative energy detection is introduced to cope with the received signal without priori knowledge. The principle and accuracy of location algorithm based on azimuth are researched. Spatial smoothing is introduced under the situation that uncorrelated and coherent signals coexist. Through analyzing consequences, future directions are suggested.

show abstract

Study on the Prediction of Troposcatter Transmission Loss

Cited by 22 publications

References 11 publications

Troposcatter Communication Link Model Based on Ray-Tracing

Troposcatter Communication Link Model Based on Ray-Tracing

Fading correlation modelling for troposcatter microwave propagation in array antenna detection applications

Research on Passive Troposcatter Location System

Contact Info

Product

Resources

About