光电工程
光電工程
광전공정
OPTO-ELECTRONIC ENGINEERING
2015年
5期
82-87
,共6页
可见光定位%三边定位法%加权因子%定位误差%LED
可見光定位%三邊定位法%加權因子%定位誤差%LED
가견광정위%삼변정위법%가권인자%정위오차%LED
visible light positioning(vlp)%trilateral method%weighted factor%positioning error%light emitting diode
针对室内可见光定位采用的三边定位算法普适性不高、定位区域较小的问题,提出了一种四LED加权定位算法。该算法结合室内照明LED布局实际情况,从可见光传输距离短定位精度高的特点出发,将传输距离信息作为加权因子引入定位算法中,提高了定位精度及扩大了定位区域。仿真实验结果表明:提出的定位算法在5 m×5 m×3 m的空间区域中可以获得约为18 cm的平均定位误差性能,有效地提高了室内定位精度和系统应用的普适性及鲁棒性。
針對室內可見光定位採用的三邊定位算法普適性不高、定位區域較小的問題,提齣瞭一種四LED加權定位算法。該算法結閤室內照明LED佈跼實際情況,從可見光傳輸距離短定位精度高的特點齣髮,將傳輸距離信息作為加權因子引入定位算法中,提高瞭定位精度及擴大瞭定位區域。倣真實驗結果錶明:提齣的定位算法在5 m×5 m×3 m的空間區域中可以穫得約為18 cm的平均定位誤差性能,有效地提高瞭室內定位精度和繫統應用的普適性及魯棒性。
침대실내가견광정위채용적삼변정위산법보괄성불고、정위구역교소적문제,제출료일충사LED가권정위산법。해산법결합실내조명LED포국실제정황,종가견광전수거리단정위정도고적특점출발,장전수거리신식작위가권인자인입정위산법중,제고료정위정도급확대료정위구역。방진실험결과표명:제출적정위산법재5 m×5 m×3 m적공간구역중가이획득약위18 cm적평균정위오차성능,유효지제고료실내정위정도화계통응용적보괄성급로봉성。
Due to some limitations for the applicability and location area of trilateral localization algorithm, a four-LED weighted positioning algorithm is proposed. By utilizing the characteristics of indoor visible light transmission such as the short distance and high positioning accuracy, in the mean time, considering the actual situation of deployment of LED indoor lighting, the transmission distance information as a weighted factor is introduced in the positioning algorithm to improve the positioning accuracy and expands the location area. Simulation results show that the proposed location algorithm is guaranteed to achieve average positioning error below 18 cm in 5 m×5 m×3 m space area, and effectively improve the indoor positioning precision and universality of application and system robustness.