摘要:
研究了4种基于时间测距的矿井人员定位方法：TOA、TWR、SDS-TWR和TDOA定位方法,它们受巷道环境等影响小,适用于煤矿井下人员精确定位。TOA定位方法要求发射设备和接收设备的时间必须严格准确同步，对发射设备和接收设备时钟精度要求非常高，并且要同步校准，定位卡和定位分站成本高。TWR定位方法不要求信号发射设备与接收设备时钟严格同步，降低了系统复杂度和成本，但定位精度受定位分站和定位卡的时钟误差影响,定位卡和定位分站成本较高。SDS-TWR定位方法不要求信号发射设备与接收设备时钟严格同步，降低了分站和定位卡的时钟误差对定位精度的影响，但定位精度仍受定位分站和定位卡的时钟误差影响,定位卡和定位分站成本较高。TDOA定位方法要求定位分站之间的时间必须严格准确同步，对定位分站时钟精度要求高，并且要同步校准,定位卡成本低,定位分站成本高。
Abstract:
Four kinds of mine personnel positioning methods based on time range were researched, namely TOA, TWR, SDS-TWR and TDOA positioning methods, they are less influenced by roadway environment and suitable for mine personnel precise positioning.TOA positioning method requires time of transmitting device and receiving device must be strictly and accurately synchronized, clock accuracy requirement of transmitting device and receiving device is very high with synchronous calibration, so its positioning card and substation cost high. TWR positioning method does not need to strictly synchronize in clock of signal transmitting device and receiving device, so complexity and cost of its positioning system is reduced, but its positioning precision is affected by clock error of positioning card and substations, positioning card and substation cost high. SDS-TWR positioning method does not need to strictly synchronize in clock of signal transmitting device and receiving device, so influence of clock error of its positioning substation and card on positioning precision is reduced, but its positioning precision is affected by clock error of positioning card and substations , positioning card and substation cost high. TDOA positioning method requires time between positioning substations must be strictly and accurately synchronized, and clock accuracy requirement of positioning substations is very high with synchronous calibration, positioning card cost lower and positioning substation cost higher.
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