In-tunnel RFID linear positioning method

The invention discloses an in-tunnel RFID linear positioning method. The invention provides a triangle calculating linear distance algorithm formula and a correction method, and the method is simple and is beneficial for improving positioning precision. The in-tunnel RFID linear positioning method is relatively simple, and the model is more clear and reliable. The calculation method is concise and does not need to solve a system of two element equations twice. The hardware quantity in model calculation is reduced by one reader, and the cost is reduced. 本发明公开了种隧道里RFID直线定位方法，提出种三角形计算直线距离算法公式，并提出种校正方法，方法简单，有利于提高定位精度。本发明的隧道直线定位方法相对比较简单，模型更清晰可靠。计算方法也要简洁，不需要解二次二元方程组。模型计算中硬件量要减少个阅读器，成本要降低。