Longitudinal Guidance Control of Landing Signal Officer Based on Variable Universe Fuzzy Logic

To ensure landing safety of carrier-based aircraft, a guidance control system of the Landing Signal Officer (LSO) based on variable universe fuzzy logic is presented in this paper. After analyzing influence factors during the longitudinal landing process, the glideslope deviation and sink rate deviation are determined as the safety factors. The LSO landing guidance control system characteristic and structure are discussed. Considering the nonlinearity, complexity and fuzziness of decision making behavior, a variable universe fuzzy system is designed to realize the LSO prediction process. Simulation results show that the improved LSO guidance prediction model presented in this paper can simulate the actual decision-making characteristics of LSO, and the output results of the system conform to the deviation correction effect under the real environment.