Abstract: Interference is an important factor that affects the communication between the sensor nodes in Wireless Sensor Networks（WSNs）. To design proposal is the primary problem for solving the interference in the communication among sensor nodes. This paper establishes two interference models of nodes in WSNs. One is based on the interference of the environment to obtain the exponential of the distance between the nodes and the ability of communication, and the other is based on man-made interference to get the influence of the sealed tin on the nodes in sensor nodes in sensor networks. According to the principle that the packet loss rate has an exponential relationship with the distance, the interference coefficient value is obtained through some experiments. On account of different interference models proposed, an anti-jamming technology of retransmission due to lost packets is employed to reduce the rate of lost packets, and eventually, anti-jamming performance of sensor networks is improved.

Key words: Wireless Sensor Network（WSN）, communication interference, network performance, information confrontation

摘要： 干扰问题是影响传感器节点间成功通信的重要因素，设计抗干扰方案是解决传感器节点通信干扰的首要问题。设置了无线传感器网络节点通信的两种干扰模型：一种是基于环境的干扰模型，旨在得到节点距离和通信强弱的指数关系；另一种是基于人为设置的干扰，旨在得到密封铁盒对铁盒中节点通信强弱的影响。根据丢包率与距离成指数关系原理得出不同干扰下的干扰系数值，针对所设置的不同通信干扰模型，统一采取丢包重传的抗干扰技术，可以降低丢包率，提升传感器网络节点通信抗干扰性能。

关键词: 无线传感器网络, 通信干扰, 网络性能, 信息对抗