Abstract: To provide a positioning technology capable of measuring a position of a moving object moving at high speed with high reliability, high accuracy, and high speed. The positioning system 1000 can obtain accurate position data using the positioning information collected from a plurality of base stations, and deliver the obtained accurate position data to the base station. In the positioning system 1000, the base station serving as the position reference station can always hold the accurate position data based on the accurate measurement result data. In the positioning system 1000, the base station whose accurate position is known is used as a position reference station to perform RTK positioning with, for example, the mobile station, thus allowing the position of the mobile station to be measured with high accuracy.

Abstract: The present invention provides a moisture-permeable waterproof sheet for building materials capable of maintaining an excellent nail hole sealing performance to keep waterproof thereof even after being exposed to severe environmental conditions. The moisture-permeable waterproof sheet 1 for building materials of this invention includes a non-woven fabric layer 2 having a bulk density of 0.01 g/cm3 or more, a porous polyolefin film layer 3 arranged on an upper side of the non-woven fabric layer 2 and having waterproof properties and moisture-permeability, and an air-permeable adhesive resin layer 4 made of a plurality of linearly-formed resins 11 arranged approximately in parallel with each other in a plan view and joining the non-woven fabric layer 2 and the porous polyolefin film layer 3. A width of the linearly-formed resin of the air-permeable adhesive resin layer 4 is 0.5 to 3 mm, and a width of a gap between adjacent linearly-formed resins is 0.1 to 1 mm.

Abstract: A building material composite sheet with the sheet improving on workability and safety by reducing not infrared reflectivity, but only visible light reflection with its moisture permeability, water-proof property and air permeability kept intact so as to restrain the operators from feeling dazzled in the eyes.