提出了一种无人机载光电吊舱在高误码率信道条件下操控指令传输策略。该传输策略通过连续重传机制保证了操控指令传输的可靠性,并依靠序号标记机制避免了重复响应。在误码率为0.01的情况下,操控指令数据包长度由20字节减少到10字节,可以将丢包率由0.85减小为0.65,正确接收一个数据包平均所需要的最少传输次数由8次大幅减少到3次。采用该传输策略保证了光电吊舱对操控指令的正确接收,降低了操控延迟,避免了重复响应。

A control instruction transmission strategy in the case of high error bit ratio for unmanned aerial vehicle(UAV)optoelectronic pod is proposed in this paper. A continuous retransmission mechanism is used in control instruction transmission for reliability, and the serial marking mechanism can avoid repeated responses. In case of the error rate is 0. 01, the packet length of control instruction reduced from 20 bytes to 10 bytes,the packet loss rate reduced from 0. 85 to 0. 65,and the minimum number of transfers required to receive a packet correctly, reduced from 8 to 3. Therefore, the transmission strategy presented in this paper can ensure the proper reception of the instructions. It reducs the operation delay and avoids repeated responses.