Wireless Transmission Technology For Photoelectric Detection And Verification Systems

With the development of the informatization process of the military,the importance of communication satellites has become increasingly prominent.In modern warfare,protecting communication satellites against hostile attack and maintaining a good communications connection has become one of the key factors which can determine the outcome of war.Therefore,in-depth research on satellite anti-missile systems has an urgent practical significance for the development of national defense.However,Attack and defense confrontation experiment between missile and satellite is expensive,and it is greatly limited by international political factors.Therefore,building a photoelectric detection and verification system on the ground can play a role in guiding the actual missile and satellite attack and defense confrontation experiments.At the same time,it reduces the impact of various aspects of the actual experiment and the cost.In this paper,a wireless transmission module is designed for the photoelectric detection and verification system,in order to realize the real-time image transmission and large-capacity file transmission between the industrial computer and the upper computer.In addition,the wireless transmission module designed in this paper has broad applications in the field of wireless sensor networks due to its low cost and low power consumption.To extend the working time of wireless sensor networks,this paper proposes an improved LEACH clustering routing protocol to balance network energy consumption.The wireless transmission module uses Nordic's n RF24L01+ as the wireless transceiver chip and the C8051F320 as the microcontroller.The design of Software includes frequency agile protocol,communication protocol,and file transfer protocol.The frequency agile protocol enables the transmitting and receiving parties to simultaneously perform frequency hopping and change the communication channel when the communication channel is interfered,which significantly improves the anti-interference ability of the communication module.The communication protocol enables the transmitting and receiving parties to continuously transmit data packets without a response signal when the channel is good,and uses SW-ARQ and dynamic frequency conversion to communicate when the channel is interfered,thereby the data throughput rate and transmission speed are improved,and the average transmission time is reduced.The file transfer protocol defines the packet type,including the begin packet,the information packet,the end packet,The load information in the begin packet is the size of the file,the load information of the file packet is the file data,and the end packet indicates that the file has been transferred.The file transfer protocol divides a large file data into several data packets and transmits them quickly and accurately from one terminal to another.Aiming at the problem that the traditional LEACH protocol randomly selects the cluster head to cause uneven energy consumption of each node in the network and the overall energy consumption of the network is too high,the improved LEACH clustering routing protocol selects the cluster according to the residual energy of the sensor node and the distance from the sensor node to the sink node.A sensor node that has more residual energy and is closer to the sink node can be preferentially elected as a cluster head.Theoretical analysis and simulation results show that compared with the traditional LEACH protocol,the improved LEACH protocol not only reduces the overall energy consumption of the wireless sensor network,but also makes the network energy consumption more balanced,extending the network life cycle by nearly 60%.The reliability of the network is significantly improved.