On the basis of analyzing the characteristics of date and energy consumption for sensor nodes, this paper proposed two transmission range adjustment algorithms as improved methods of DTA algorithm in order to avoid energy hole in wireless sensor networks. The optimization goal of the two proposed algorithms were the sum of absolute value of energy consumption difference for sensor nodes between neighboring layers and energy consumption variance respectively. The simulation results show that both of the improved algorithms are better than DTA algorithm, for algorithm 1 and algorithm 2 extends the network lifetime about 44% and 56% respectively.%在分析传感器节点的数据特征和能耗特征的基础上,针对现有的DTA算法存在的问题,分别以相邻层传感器节点能耗差值的绝对值之和与能耗方差作为优化目标,提出了两种改进的传感器节点发射距离自适应调整算法,以避免WSN中能量空洞现象.通过仿真表明,改进算法更加合理,与DTA算法相比,改进算法1使网络寿命延长了44％；改进算法2使网络寿命延长了56％.
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