自由飞行下考虑CNS性能的多机碰撞风险研究

发布时间：2018-04-29 15:41

本文选题：自由飞行 + 碰撞风险　；参考：《中国民航大学》2017年硕士论文

【摘要】：本文主要研究了自由飞行下基于CNS性能的多机碰撞风险评估问题。自由飞行能够提高空域容量,缓解空域拥挤问题。保障自由飞行下航空器的安全运行,需要研究航空器的碰撞风险问题。本文总结了自由飞行的国内外研究现状,对自由飞行中定位误差的影响因素进行分析,并以定位误差为基础,建立多机碰撞风险模型。工作内容如下:(1)考虑CNS性能为航空器定位误差的主要影响因素,根据误差随时间的变化规律,将由误差导致的航空器运动确定为布朗运动。针对高交通密度的空域环境,分别在水平和垂直投影面建立基于定位误差的多机碰撞风险模型。利用梯形法对模型进行求解,通过模型参数的变化得出对碰撞风险的影响规律。(2)考虑自由飞行的运行环境,对航空器定位误差的影响因素进行综合分析,利用惯性导航系统(INS)和全球定位系统(GPS)技术互补的特点,对航空器定位误差进行联合修正,得到修正后的定位误差随时间的变化规律。以上文中水平投影面的碰撞风险模型为基础,建立自由飞行下基于航空器定位误差修正的多机碰撞风险模型。利用算例证明误差修正后碰撞风险模型较好。(3)考虑CNS性能对航空器定位误差的影响因素,根据多架航空器的运行状况,利用几何原理把两架航空器的冲突区域拓展成适用于高交通密度的凸多边形冲突区域,据此建立多机碰撞风险模型。通过算例分析得到不同间距下航空器的碰撞风险,根据给定安全目标水平确定最小安全间距。
[Abstract]:In this paper, the problem of multi-aircraft collision risk assessment based on CNS performance in free flight is studied. Free flight can improve airspace capacity and alleviate the problem of airspace congestion. To guarantee the safe operation of aircraft under free flight, it is necessary to study the collision risk of aircraft. This paper summarizes the research status of free flight at home and abroad, analyzes the influencing factors of positioning error in free flight, and establishes a multi-aircraft collision risk model based on positioning error. The work is as follows: 1) considering the performance of CNS as the main influencing factor of aircraft positioning error, according to the rule of error with time, the aircraft motion caused by error is determined as Brownian motion. Aiming at the high traffic density spatial environment, a multi-plane collision risk model based on location error is established on the horizontal and vertical projection planes respectively. The trapezoidal method is used to solve the model, and the influence law on collision risk is obtained by changing the parameters of the model. (2) considering the operating environment of free flight, the influencing factors of aircraft positioning error are comprehensively analyzed. Based on the complementary features of inertial navigation system (ins) and GPS (Global Positioning system (GPS)), the joint correction of aircraft positioning error is carried out, and the change rule of the corrected positioning error with time is obtained. Based on the collision risk model of horizontal projection plane in the above paper, a multi-aircraft collision risk model based on aircraft positioning error correction under free flight is established. An example is used to prove that the collision risk model after error correction is better. (3) considering the influence factors of CNS performance on the positioning error of aircraft, according to the operation condition of multiple aircraft, The collision area of two aircraft is extended to a convex polygon conflict area with high traffic density by using geometric principle, and a multi-aircraft collision risk model is established. The collision risk of aircraft with different spacing is obtained by example analysis, and the minimum safety distance is determined according to the given safety target level.
【学位授予单位】：中国民航大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：V328

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