基于DGPS的通用航空飞机静压源误差修正方法  

General Aviation Aircraft Static Pressure Source Error Correction Method Based on DGPS

作　　者：刘畅 王银坤[1] LIU Chang;WANG Yin-kun(Mianyang Flight College of Civil Aviation Flight University of China,Mianyang 621000,China)

机构地区：[1]中国民航飞行学院绵阳分院,四川绵阳621000

出　　处：《航空计算技术》2025年第2期33-36,42,共5页Aeronautical Computing Technique

基　　金：中央高校基本科研业务费项目资助(24CAFUC03073)。

摘　　要：大气数据系统对于飞机的飞行安全起着至关重要的作用,飞行的各个阶段都依赖于准确的大气数据。但是,基于气压的空速和高度系统在测量飞机全压、静压时容易出现误差,这会导致在驾驶舱中显示的指示空速、气压高度、升降速度等重要数据出现偏差,对飞行人员操纵飞机造成影响。所以,对误差的修正是至关重要的。对静压源误差的定义、产生和影响因素进行了分析与说明,提出了一种基于差分GPS(Differential GPS,DGPS)的静压源误差修正方法,并在一架Cessna172S飞机上开展了飞行试验。通过将本修正方法与两种传统修正方法的飞行试验结果进行对比,证明了本修正方法是准确、可行且具有一定优势的。The air data system plays a vital role in the flight safety of aircraft,and every stage of flight depends on accurate air data.However,the airspeed and altitude system based on air pressure is prone to errors when measuring the total pressure and static pressure of the aircraft,which will lead to the deviation of important data such as indicated airspeed,barometric altitude,vertical speed displayed in the cockpit,which will affect the flight personnel′s control of the aircraft.Therefore,the correction of errors is crucial.In this paper,the definition,generation and influence factors of static pressure source error are analyzed and explained,and a method of static pressure source error correction based on differential GPS(DGPS)is proposed,and the flight test is carried out on a Cessna172S aircraft.By comparing the flight test results of this method with those of the other two traditional methods,it is proved that this method is accurate,feasible and has certain advantages.

关 键 词：大气数据系统 静压源误差 差分GPS 误差修正 

分 类 号：V221.91[航空宇航科学与技术—飞行器设计]