Measurement of UHF Signal Strength Propagating from Road Surface with Vehicle Obstruction
Radio wave propagation on the road surface is a major
problem on wireless sensor network for traffic monitoring. In this
paper, we compare receiving signal strength on two scenarios 1) an
empty road and 2) a road with a vehicle. We investigate the effect of
antenna polarization and antenna height to the receiving signal
strength. The transmitting antenna is installed on the road surface.
The receiving signal is measured 360 degrees around the transmitting
antenna with the radius of 2.5 meters. Measurement results show the
receiving signal fluctuation around the transmitting antenna in both
scenarios. Receiving signal with vertical polarization antenna results
in higher signal strength than horizontal polarization antenna. The
optimum antenna elevation is 1 meter for both horizon and vertical
polarizations with the vehicle on the road. In the empty road, the
receiving signal level is unvarying with the elevation when the
elevation is greater than 1.5 meters.
[1] I. F. Akyildiz, W. Su, Y. Sankarasubramaniam, and E. Cayirci, "A
survey on sensor networks," IEEE Communications Magazine, vol. 40,
pp. 102-114, Aug. 2002.
[2] C. Thongsopa, A. Intarapanich, M. Maungrat, "Temporal Measurement
of UHF Radio Wave in Presence of Vehicle," 2009 International
Symposium on Electromagnetic Compatibility, July 20-24, 2009.
[3] M. Hadzialic, V.Lipovac, N. Behlilovic, "Fading and Propagation
Attenuation Based Explicit Analytical Model for the PDF of Mobile
Channel Composite Envelope," Proceedings of the 18th International
Conference, ICECom, Oct. 12-14, 2005: pp. 1-4 , 2005.
[4] A. Stevens, "Intelligent transport systems, services, solutions, society,"
IET Intell. Transp. Syst., vol. 1, no. 1, pp. 1-2, Mar 2007.
[5] P. Herley, " Short distance attenuation measurement at 900 MHz and
1.8 GHz using low antenna heights for microcells," IEEE Journal on
Selected Areas in Communications., vol. 7, no. 1, pp. 5-11, 1989.
[6] M. Rak and P. Pechac, "UHF propagation in caves and subterranean
galleries," IEEE Trans. Antennas Propag., vol. 55, no. 4, pp. 1134-
1138, 2007.
[1] I. F. Akyildiz, W. Su, Y. Sankarasubramaniam, and E. Cayirci, "A
survey on sensor networks," IEEE Communications Magazine, vol. 40,
pp. 102-114, Aug. 2002.
[2] C. Thongsopa, A. Intarapanich, M. Maungrat, "Temporal Measurement
of UHF Radio Wave in Presence of Vehicle," 2009 International
Symposium on Electromagnetic Compatibility, July 20-24, 2009.
[3] M. Hadzialic, V.Lipovac, N. Behlilovic, "Fading and Propagation
Attenuation Based Explicit Analytical Model for the PDF of Mobile
Channel Composite Envelope," Proceedings of the 18th International
Conference, ICECom, Oct. 12-14, 2005: pp. 1-4 , 2005.
[4] A. Stevens, "Intelligent transport systems, services, solutions, society,"
IET Intell. Transp. Syst., vol. 1, no. 1, pp. 1-2, Mar 2007.
[5] P. Herley, " Short distance attenuation measurement at 900 MHz and
1.8 GHz using low antenna heights for microcells," IEEE Journal on
Selected Areas in Communications., vol. 7, no. 1, pp. 5-11, 1989.
[6] M. Rak and P. Pechac, "UHF propagation in caves and subterranean
galleries," IEEE Trans. Antennas Propag., vol. 55, no. 4, pp. 1134-
1138, 2007.
@article{"International Journal of Electrical, Electronic and Communication Sciences:58218", author = "C. Thongsopa and P. Sukphongchirakul and A. Intarapanich and P. Jarataku", title = "Measurement of UHF Signal Strength Propagating from Road Surface with Vehicle Obstruction", abstract = "Radio wave propagation on the road surface is a major
problem on wireless sensor network for traffic monitoring. In this
paper, we compare receiving signal strength on two scenarios 1) an
empty road and 2) a road with a vehicle. We investigate the effect of
antenna polarization and antenna height to the receiving signal
strength. The transmitting antenna is installed on the road surface.
The receiving signal is measured 360 degrees around the transmitting
antenna with the radius of 2.5 meters. Measurement results show the
receiving signal fluctuation around the transmitting antenna in both
scenarios. Receiving signal with vertical polarization antenna results
in higher signal strength than horizontal polarization antenna. The
optimum antenna elevation is 1 meter for both horizon and vertical
polarizations with the vehicle on the road. In the empty road, the
receiving signal level is unvarying with the elevation when the
elevation is greater than 1.5 meters.", keywords = "Wave propagation, wireless sensor network.", volume = "4", number = "9", pages = "1394-5", }