分支发射分集方案，2根发射天线、1根接收天线，最高信噪比为12dB，即仿真范围为0dB到12dB-Branch transmit diversity scheme, two transmit antennas, a receiving antenna, the maximum SNR is 12dB, the range for the simulation i.e. 0dB to 12dB

此matlab程序为嫦娥三号在主减速阶段与粗避障阶段的最优控制程序(This matlab program is the optimum control program for Chang e three in the main deceleration stage and the rough obstacle avoidance stage)