Abstract: In this paper，the reason of not being able to find the moving target during tracking is first discussed.Then taking advantage of grid structure，the paper uses least-squares method localized，predicts the next location and presents an optimized recovery algorithm to track moving targets.Finally，it is shown by simulations that the proposed algorithm is effective in energy consumed and the tracking precision and performs a quick recovery.

摘要： 分析了传感器网络在目标追踪过程中产生目标丢失的原因，在此基础上采用网格结构的设计思想，通过最小二乘法对追踪目标定位，并对目标下一时刻的位置做出预测，提出了目标丢失故障恢复新的算法和技术。实验证明，所提出的算法和技术在能量消耗和追踪精确度上，能够有效地解决跟踪目标发生丢失故障后快速恢复的问题。