详情

原文传递 Road surface conditions monitoring by using radiometer

题名：	Road surface conditions monitoring by using radiometer
作者：	KITANO-T (Advanced Cruise-Assist Highway System Res Assoc, NEC Corp, Tokyo, Japan); OWAKI-S (Advanced Cruise-Assist Highway System Res Assoc, NEC Corp, Tokyo, Japan)
关键词：	CONFERENCE-; 8525-; INTELLIGENT-TRANSPORT-SYSTEM; 8735-; SAFETY-; 1665-; BRAKING-DISTANCE; 1695-; HIGHWAY-; 2755-; SURFACE-; 6438-; SENSOR-; 6120-; CAR-; 1243-; TEMPERATURE-; 6722-; LUMINANCE-; 0525-; POLARIZATION-; 6796-; CONDITION-SURVEY; 3857-; SNOW-; 2552-; ICE-; 2578-; WATER-; 4355-; DETECTION-; 9115-
摘要：	The road surface monitoring system installed in the infrastructure system is very critical to calculating the braking distance that is needed for keeping a safety distance between cars. To meet this requirement, a 95GHz-band radiometer was fabricated, having innovative features that other sensors do not have, that is, an all-weather performance, night-and-day use, and passive sensor. Using the radiometer, the sky temperature, road surface brightness temperature, and road surface temperature to obtain emissivity values were measured. The graph that indicates the emissivity of the horizontally polarized wave on the horizontal axis and the difference in emissivity between the horizontally and vertically polarized wave on the vertical axis was produced. As a result, five different road surface conditions (dry, wet, water film, snow, and ice) were displayed separately, revealing that it is quite possible to discriminate between these road conditions. (A*) For the covering abstract see ITRD E110327.
总页数：	PROCEEDINGS OF 6TH WORLD CONGRESS ON INTELLIGENT TRANSPORT SYSTEMS (ITS), HELD TORONTO, CANADA, NOVEMBER 8-12, 1999. 1999. pp-
报告类型：	科技报告