What is the configuration for a duplex multiplex autoland system?

The configuration for a duplex multiplex autoland system is correctly identified as dual channel. This system utilizes two independent channels to process information and control the autoland functionality of an aircraft. The dual channel setup enhances redundancy and reliability, ensuring that if one channel fails, the other can take over and maintain safe operation. This is crucial in aviation, where safety is paramount, particularly during critical phases like landing.

In the context of autoland systems, having two channels allows for continuous cross-checking and comparison of data, which is essential for accurate navigation and control. This redundancy minimizes the risk of errors that could lead to unsafe landings.

Other configurations such as single channel would not provide the necessary level of safety due to lack of redundancy, while triple and quadruple channels, although they could increase safety through additional redundancy, are not typically used for standard autoland systems. Thus, dual channel is the optimal balance of safety and practicality for this application.