NDLI: Near-earth RF propagation - Path loss and variation with weather

Content Provider	IEEE Xplore Digital Library
Author	Larsson, A. Piotrowski, A. Giles, T. Smart, D.
Copyright Year	2013
Description	Author affiliation: Dept. of Defence, EWRD, Edinburgh, SA, Australia (Larsson, A.; Piotrowski, A.; Giles, T.; Smart, D.)
Abstract	Most of the current radio frequency propagation analysis is focused on signals travelling well above the earth's surface. A recent surge in low power communication networks having RF signals propagating close to the earth's surface has resulted in some networks using antennas operating at heights less than one metre from the surface. The resultant near ground RF propagation and the effect of obstructions that impinge upon the first Fresnel zone for short ranges is not well understood. It is unclear as to which propagation model to apply in this situation. Knowledge of the propagation conditions is essential to the design of radio communications for distributed radars such as those used for perimeter protection. DSTO is investigating RF propagation and evaluating the effects of weather for these propagation conditions. Propagation loss measurements were made at UHF frequencies using antennas set at heights varying between 0.3 m and 1.5 m in rural line of sight environments. Measured RF propagation loss results for these conditions are in very good agreement with the two-ray RF propagation model. In addition, the dew and cloud coverage can significantly affect the RF propagation loss.
Starting Page	57
Ending Page	63
File Size	1149358
Page Count	7
File Format	PDF
e-ISBN	9781467351782
DOI	10.1109/RADAR.2013.6651960
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-09
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radio frequency Propagation losses Receiving antennas Antenna measurements Loss measurement Rough surfaces wireless sensors RF Propagation near ground radar unattended ground sensor propagation loss atmospheric effects
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Receiving antenna height dependence of radio propagation path loss in fixed wireless access environment

An Experimental Look at Rf Propagation in Narrow Tunnels

In-vehicle RF propagation measurements for Wireless Sensor Networks at 433/868/915/2400MHz

Wireless body area networks path loss characterization analysis

Determining the average penetration loss: measurement procedure and results

Metallic Environmental Effect on RF-Based Energy Transmission

Empirical channel model for unattended near ground sensor networks at UHF

The effect of bush growth on radio wave propagation in 920-MHz band

Short-range near-floor RF propagation experiments in indoor corridors for Wireless Sensor Communications

Near-earth RF propagation - Path loss and variation with weather

Similar Documents

Receiving antenna height dependence of radio propagation path loss in fixed wireless access environment

An Experimental Look at Rf Propagation in Narrow Tunnels

In-vehicle RF propagation measurements for Wireless Sensor Networks at 433/868/915/2400MHz

Wireless body area networks path loss characterization analysis

Determining the average penetration loss: measurement procedure and results

Metallic Environmental Effect on RF-Based Energy Transmission

Empirical channel model for unattended near ground sensor networks at UHF

The effect of bush growth on radio wave propagation in 920-MHz band

Short-range near-floor RF propagation experiments in indoor corridors for Wireless Sensor Communications

Near-earth RF propagation - Path loss and variation with weather