Gaussian approximation for correlation function of apparent antenna pattern over beyond-the-horizon tropospheric path

Akulinichev, Yu. P.; Mescheryakov, A.

doi:10.1109/igarss.1999.774648

Cited by 1 publication

(2 citation statements)

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“…3d provides the comparison of the STF results with the experimental results of 310 km path with 2120 MHz in [20], 495 km path with 3 GHz in [24] [where the experimental results are provided as correlation function curve, and we convert it to correlation coefficient curve as the definition in (19)]. Our correlation results with the same channel parameters are consistent with the experimental results presented in [20,24]. Some deviations between the theoretical and experimental results maybe due to the real-world atmospheric condition difference and the antenna height misalignment.…”

Section: Fading Correlation Between Multi-beamsmentioning

confidence: 99%

“…Tropospheric refraction bending and slowing error is considered in target positioning and ranging by spatially separated radars in [23], wherein the data fusion of two radars is focused rather than the target detection from single radar. The horizontal angle correlation between receiving antenna and rotating transmitting antenna is considered both theoretical and experimentally, with wave scattering over an OTH tropospheric path [24], which can be used to validate our results of fading correlation along horizontal angle separation. Phase correlation in troposcatter array receiving signals and troposcatter propagation loss is considered in surveillance applications in our preliminary work [10,25].…”

Section: Introductionmentioning

confidence: 99%

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

Wang¹,

Wang²,

Wang³

et al. 2017

IET Microwaves, Antennas & Propagation

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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.

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Section: Fading Correlation Between Multi-beamsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%