Trajectory prediction method and device for reciprocating sounding system

Abstract

The invention provides a trajectory prediction method and device for a reciprocating sounding system. The method comprises the following steps: determining the radius of a balloon when the system ascends or floats according to thermodynamic properties of inflation gas and balloon skin in combination with high-temporal-spatial-resolution atmospheric environment parameters predicted by a numerical weather mode; according to the first drag coefficient, the effective cross sectional area of the balloon and the volume of the balloon, determining the vertical acceleration of the system under the static atmosphere condition; according to the vertical acceleration and the mode high space-time atmospheric environment three-dimensional velocity field, predicting trajectory of a system in an ascending stage and a floating stage; and predicting the descending section trajectory according to the second drag coefficient and the atmospheric environment parameters. Therefore, the high-temporal-spatial-resolution atmospheric environment parameters, the high-temporal-spatial-resolution atmospheric three-dimensional velocity field, the drag coefficient with higher precision and the thermodynamic property which are predicted by directly adopting the high-resolution numerical weather mode improve the precision of trajectory prediction.

Description

technical field [0001] The present application relates to the field of atmospheric detection, in particular, to a trajectory prediction method and device for a round-trip sounding system. Background technique [0002] The sounding balloon is the carrier of traditional atmospheric vertical direct detection instruments, generally made of polyethylene and other materials, and the inflated gas is hydrogen or helium. The sounding balloon can carry the sounding instrument to rise vertically to realize the detection of temperature, humidity, wind, etc. in the vertical direction of the atmosphere. The trajectory prediction of traditional sounding balloons mainly assumes that the balloon is a perfect tracer of the atmosphere, and the balloon has no other power except buoyancy; At the same time, it is assumed that the level change of the stratospheric wind field is also small, and the past atmospheric wind field can be directly used as an approximation of the future wind field. Howev...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present application is to provide a method and device for trajectory prediction of a round-trip sounding system to solve the technical problem of low accuracy in trajectory prediction of a round-trip sounding system

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