基于TDOF的分布式激光定位系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)
發(fā)布時(shí)間:2018-10-22 09:21
【摘要】:依據(jù)無線傳感器網(wǎng)絡(luò)WSN(Wireless Sensor Networks)定位系統(tǒng)的理念,設(shè)計(jì)并實(shí)現(xiàn)了一套基于一組905 nm的窄帶寬紅外脈沖激光的高精度,高頻率的室內(nèi)定位系統(tǒng)。該系統(tǒng)利用到達(dá)分布式激光脈沖接收器的飛行時(shí)間差TDOF(Time Difference Of Flight)進(jìn)行定位,激光接收模塊作為信標(biāo)節(jié)點(diǎn)采集來自同步節(jié)點(diǎn)和定位節(jié)點(diǎn)先后發(fā)出的激光脈沖,并通過串口方式發(fā)送TDOF信號到中心控制主機(jī),中心控制主機(jī)通過TDOF信號與各信標(biāo)節(jié)點(diǎn)的空間坐標(biāo)進(jìn)行定位計(jì)算,定位解算方法基于高斯牛頓迭代法(Gauss-Newton iterative algorithm)和最小二乘法(Least square method)。實(shí)驗(yàn)結(jié)果表明,該系統(tǒng)的平均定位誤差可優(yōu)化到±6.5 mm內(nèi),并且可以通過更多有效數(shù)據(jù),進(jìn)一步提高定位精度。
[Abstract]:According to the concept of WSN (Wireless Sensor Networks) positioning system in wireless sensor network, a high precision and high frequency indoor positioning system based on a set of 905 nm narrow bandwidth infrared pulse lasers is designed and implemented. The system uses the time-of-flight difference (TDOF (Time Difference Of Flight) of the distributed laser pulse receiver to locate, and the laser receiving module acts as the beacon node to collect the laser pulses from the synchronous node and the location node successively. The TDOF signal is sent to the central control host through serial port. The central control host uses TDOF signal and the spatial coordinates of each beacon node to locate and calculate. The location solution is based on Gao Si Newton iteration (Gauss-Newton iterative algorithm) and least square method (Least square method). The experimental results show that the average positioning error of the system can be optimized to 鹵6.5 mm, and the positioning accuracy can be further improved through more effective data.
【作者單位】: 浙江大學(xué)光電學(xué)院;
【分類號】:TN249
本文編號:2286756
[Abstract]:According to the concept of WSN (Wireless Sensor Networks) positioning system in wireless sensor network, a high precision and high frequency indoor positioning system based on a set of 905 nm narrow bandwidth infrared pulse lasers is designed and implemented. The system uses the time-of-flight difference (TDOF (Time Difference Of Flight) of the distributed laser pulse receiver to locate, and the laser receiving module acts as the beacon node to collect the laser pulses from the synchronous node and the location node successively. The TDOF signal is sent to the central control host through serial port. The central control host uses TDOF signal and the spatial coordinates of each beacon node to locate and calculate. The location solution is based on Gao Si Newton iteration (Gauss-Newton iterative algorithm) and least square method (Least square method). The experimental results show that the average positioning error of the system can be optimized to 鹵6.5 mm, and the positioning accuracy can be further improved through more effective data.
【作者單位】: 浙江大學(xué)光電學(xué)院;
【分類號】:TN249
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