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GPS based prediction of the instantaneous impact point for sounding rockets

机译：基于GPS的探空火箭瞬时撞击点预测

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摘要

As part of the range safety operations during a sounding rocket launch, a real-time prediction of the instantaneous impact point (IIP) is performed to monitor the expected touch down point in case of a boost termination. Supplementary to traditional radar tracking the IIP prediction is nowadays based on GPS navigation data, which offer an inherently higher accuracy and reduced data noise. To comply with the increased tracking performance, a consistent set of equations suitable for real-time computation of the approximate IIP is established. Aside form a consideration of gravitational forces, reference frame rotation and Earth curvature, the model can also account for drag during the ascent trajectory provided that a priori information on the ballistic properties of the launch vehicle is available. The algorithm is tested for a representative set of mission profiles a and applied to GPS flight data of an Improved Orion rocket and a Maxus rocket launched at Esrange, Kiruna.
机译：在探空火箭发射过程中，作为范围安全操作的一部分，对瞬时冲击点（IIP）进行实时预测，以监控在助推器终止时的预期着陆点。如今，基于GPS导航数据的IIP预测已成为对传统雷达跟踪的补充，它固有地具有更高的精度并减少了数据噪声。为了符合增加的跟踪性能，建立了适用于近似IIP实时计算的一致方程组。除了考虑重力，参考系旋转和地球曲率之外，该模型还可以考虑上升轨迹期间的阻力，只要能够获得有关运载火箭弹道特性的先验信息。测试了该算法的一组代表性任务简档a，并将其应用于在基律纳Esrange发射的改进型Orion火箭和Maxus火箭的GPS飞行数据。

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