Sensitivity Analysis of Multiple Scattering Theory Applied to Tree Canopies at Microwave Frequencies

Kvičera, Milan; Israel, Jonathan; Pérez-Fontán, F.; Pechač, Pavel

doi:10.1109/lawp.2015.2498645

Cited by 10 publications

(31 citation statements)

References 12 publications

(39 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unfortunately, the use of MST introduces enormous requirements in terms of computation time and the software implementation complexity [4][5][6]. Recently, the authors have developed in [7] a new model addressing scattering from tree canopies which significantly lowers the corresponding requirements by replacing MST coherent field calculations by utilizing the physical optics (PO) approach based on [8].…”

Section: Of 16mentioning

confidence: 99%

“…However, its complexity and non-trivial software implementation together with unwieldy computation demands, especially for the case of the coherent scattered field calculations [4][5][6], prevent its widespread usage. On the other hand, the incoherent scattered field dominating in other than the forward scatter direction can be obtained in a more convenient way.…”

Section: Multiple Scattering Theory (Mst)mentioning

confidence: 99%

“…Considering the incident plane wave , the coherent field for the point ′ inside the canopy is, e.g., [4][5][6][7]10]:…”

Section: Multiple Scattering Theory (Mst)mentioning

confidence: 99%

“…As MST inputs also include physical characteristics in the form of branches and leaves dimensions, complex permittivity, number densities, and spatial orientation statistics [4][5][6], it represents a very suitable candidate for site-specific modeling.…”

Section: Multiple Scattering Theory (Mst)mentioning

confidence: 99%

“…On the other hand, the incoherent scattered field dominating in other than the forward scatter direction can be obtained in a more convenient way. The reason is that, in this case, the corresponding tree canopy can be spatially sampled by voxels of sides exceeding half the wavelength [6], thus, significantly decreasing the computation time. We should note, however, that shadowing behind a tree canopy results only from the coherent field [4][5][6].…”

Section: Multiple Scattering Theory (Mst)mentioning

confidence: 99%

See 4 more Smart Citations

A New Propagation Channel Synthesizer for UAVs in the Presence of Tree Canopies

2017

Self Cite

View full text Add to dashboard Cite

Abstract:Following the increasing popularity of unmanned aerial vehicles (UAVs) for remote sensing applications, the reliable operation under a number of various radio wave propagation conditions is required. Assuming common outdoor scenarios, the presence of trees in the vicinity of a UAV or its ground terminal is highly probable. However, such a scenario is very difficult to address from a radio wave propagation point of view. Recently, an approach based on physical optics (PO) and the multiple scattering theory (MST) has been proposed by the authors, which enables fast and straightforward predictions of tree-scattered fields at microwave frequencies. In this paper, this approach is developed further into a generative model capable of providing both the narrowband and wideband synthetic time series of received/transmitted signals which are needed for both UAV communications and remote sensing applications in the presence of scattering from tree canopies. The proposed channel synthesizer is validated using both an artificially-generated scenario and actual experimental dataset.

show abstract

Section: Of 16mentioning

confidence: 99%

Section: Multiple Scattering Theory (Mst)mentioning

confidence: 99%

“…Considering the incident plane wave , the coherent field for the point ′ inside the canopy is, e.g., [4][5][6][7]10]:…”

Section: Multiple Scattering Theory (Mst)mentioning

confidence: 99%

Section: Multiple Scattering Theory (Mst)mentioning

confidence: 99%

Section: Multiple Scattering Theory (Mst)mentioning

confidence: 99%

See 3 more Smart Citations

A New Propagation Channel Synthesizer for UAVs in the Presence of Tree Canopies

2017

Self Cite

View full text Add to dashboard Cite

show abstract

Implementation of an Interactive Environment With Multilevel Wireless Links for Distributed Botanical Garden in University Campus

et al. 2020

View full text Add to dashboard Cite

In this contribution, an end to end system to enable user interaction with a distributed botanical university campus garden is designed, implemented and tested. The proposed system employs different wireless links to collect data related to different bio physiological parameters of both the vegetation mass and the surrounding environment. Detailed analysis of these multilevel communication links is performed by using deterministic volumetric wireless channel estimation and considering underground, near ground and over ground radio propagation conditions. An in-house developed technique enables accurate wireless channel characterization for complete campus scenario considering the multiple link types and all its composing elements. Node definition and network topology is thus obtained by wireless channel analysis of over ground, near ground and underground communication for both 868 MHz and 2.4 GHz Wireless Sensor Networks in an inhomogeneous vegetation environment. Connectivity to enable user interaction as well as for telemetry and tele-control purposes within the campus is achieved by combining ZigBee and LoRaWAN transceivers with the corresponding sensor/actuator platforms. Coverage studies have been performed in order to assess communication capabilities in the set of multiple underground/near ground/over ground links, by means of deterministic channel analysis for the complete university campus location. Measurement results in lab environment as well as full system deployment are presented, showing good agreement with deterministic simulations. Moreover, system level tests have been performed over a physical campus cloud, providing adequate quality of experience metrics. The proposed solution is a scalable system that provides real time trees status monitoring by a cloud-based platform, enabling user interaction within a distributed botanical garden environment in the university campus.

show abstract