CAJ | 학술논문

提出一种到达时差(TDOA)定位方法,利用Chan氏算法进行初始定位估计,将估计结果作为经验知识存储于信念空间中,采用文化算法求解定位估计中的最大似然函数,获得最佳估计坐标值,从而实现对移动台的最终定位估计.历史知识的引入能有效避免陷入局部最优值,并改善算法的定位精度.仿真实验结果表明,该方法性能稳定、定位精度高、收敛速度快.
제출일충도체시차(TDOA)정위방법,이용Chan씨산법진행초시정위고계,장고계결과작위경험지식존저우신념공간중,채용문화산법구해정위고계중적최대사연함수,획득최가고계좌표치,종이실현대이동태적최종정위고계.역사지식적인입능유효피면함입국부최우치,병개선산법적정위정도.방진실험결과표명,해방법성능은정、정위정도고、수렴속도쾌.
A novel Time Difference Of Arrival(TDOA) location method is proposed.Chan algorithm is used in rough location estimation and the result is stored in belief space as experience knowledge.To realize the final location estimation,the Cultural Algorithm(CA) is used to get the optimum coordinates by solving the maximum likelihood function in TDOA.The proposed method can effectively avoid being trapped into local optimum and improve the location precision by history knowledge.Simulation experimental results show the method has the ability of strong stability,high precision and rapid convergence.