Patent ID: 7038203
Filing Date: 2006-05-02
Classification: B64G,G01N

Abstract:
1. A method for observing high-altitude neutral air, comprising the steps of: discharging ion particles so as to be influenced by a magnetic field originated from the earth, colliding said ion particles with high-altitude neutral air to generate high velocity neutral particles through charge exchange, and detecting said high velocity neutral particles to determine the distance to said high-altitude neutral air from at least one of the discharging positions of said ion particles and the detected positions of said high velocity neutral particles from the period of time between the time of discharge of said ion particles and the time of detecting said high velocity neutral particles, to determine the moving direction of said high-altitude neutral air from the detected direction of said high velocity neutral particles, and to determine the spatial position of said high-altitude neutral air, wherein the relative position between the discharging position of the ion particles and the detected positions of the neutral particles is not predetermined.