空军预警学院学报
空軍預警學院學報
공군예경학원학보
Journal of Air Force Radar Academy
2014年
6期
418-421
,共4页
航迹模拟%无人机偏航%子午线弧长反解
航跡模擬%無人機偏航%子午線弧長反解
항적모의%무인궤편항%자오선호장반해
track simulation%UAV off-course%inverse solution of meridian arc length
针对某型无人机模拟操作软件航迹计算精度存在的不足,提出了一种基于椭圆正反解公式的新的航迹计算方法。根据大地坐标系与大地基准相关原理,利用微元分析法计算无人机偏航航迹,通过缩小时间间隔,计算出等高飞行的无人机在小偏航角情形下的航迹经纬度。仿真验证结果表明,该方法能准确地计算小偏航角状态下无人机的飞行航迹,并能正确地对无人机飞越极点和赤道等特殊情况进行航迹修正,可用于其他飞行器的偏航航迹计算。
針對某型無人機模擬操作軟件航跡計算精度存在的不足,提齣瞭一種基于橢圓正反解公式的新的航跡計算方法。根據大地坐標繫與大地基準相關原理,利用微元分析法計算無人機偏航航跡,通過縮小時間間隔,計算齣等高飛行的無人機在小偏航角情形下的航跡經緯度。倣真驗證結果錶明,該方法能準確地計算小偏航角狀態下無人機的飛行航跡,併能正確地對無人機飛越極點和赤道等特殊情況進行航跡脩正,可用于其他飛行器的偏航航跡計算。
침대모형무인궤모의조작연건항적계산정도존재적불족,제출료일충기우타원정반해공식적신적항적계산방법。근거대지좌표계여대지기준상관원리,이용미원분석법계산무인궤편항항적,통과축소시간간격,계산출등고비행적무인궤재소편항각정형하적항적경위도。방진험증결과표명,해방법능준학지계산소편항각상태하무인궤적비행항적,병능정학지대무인궤비월겁점화적도등특수정황진행항적수정,가용우기타비행기적편항항적계산。
To solve the accuracy deficiency of simulation operational software for the track computation of a certain type of UAV, this paper proposes a novel track computation approach based on the positive and negative solution formula of ellipse. According to geodetic coordinate system and the geodetic datum related principles, the off-course track of UAV is calculated by using the micro-element analytic method, and the longitude and latitude of flying UAV in the state of a small off-course angle and the constant altitude are calculated by reducing the time interval. Test results indicate that the track of UAV under the circumstance of a small off-course angle can be calculated accurately by using this algorithm, and the track be corrected for some special cases when the UAV flying over the maximum point and/or equator, which can be also available for the off-course track computation of other air vehicles.