摘要：飞机自动着陆GPS导航系统采用差分法消除基准站和飞机接收机的GPS误差。基准站和飞机接收机从卫星接收GPS信号，测得各自GPS坐标并通过 a-b 滤波器滤除噪声误差，再将基准站坐标与精确坐标比较得到差分修正值。飞机坐标减去差分修正值即为较精确的飞机坐标。利用GPS的地心坐标将其转换为当地坐标，则可设计出任意着陆的空间三维基准路线，通过控制律使飞机跟踪基准路径自动着陆。数字仿真验证了系统鲁棒性。
关键词：GPS导航；自动着陆；差分修正；滤波器
中图分类号： 文献标识码：A
英文题名：GPS-Navigating System to Airplane Automatic Landing
FENG Jiang1, WANG Xiao-yan2, LIU Xi-ping2, LIAO Wei1
（1. College of Information Engineering, Jiangxi UNIversity of Science & Technology, Ganzhou 341000, China;
2. College of Mechanical & Electronic Engineering, Jiangxi University of Science & Technology, Ganzhou 341000, China)
Abstract: The Airplane Automatic landing based on GPS-navigating eliminates the GPS-error of datum-station and airplane receiver by method of position-difference. Datum-station and airplane receiver receive the GPS signal from satellite, survey the GPS-coordinate, filter the noise error by α-β filter, and then get the difference amend by comparing the datum-station coordinate and exact coordinate. The airplane coordinate subtracting the difference amends gets the exact coordinate. By transforming the earth's center coordinate to local coordinate, designs the 3D sPACe datum route of random landing, and make airplane automatic landing by following datum route by control rule. Verify the robustness by simulation.
Key words: GPS-navigating; Automatic landing; Difference amend; Filter
