THE PRINCIPLE OF MICRO-ROCKET ELECTRIC FIELD INSTRUMENT AND ITS APPLICATION

A new instrument for measuring the electric field in thunderclouds, micro rocket electric field instrument, is introduced. It is remodeled from Φ55mm×760mm hail elimination micro rocket. The principle is that a conductor will induce electric charge in electric field. It consists of electric field sensor, measuring circuit, 1680MHz telemetric transmitter and antenna. The feature of this instrument is simple structure, high integration, microminiaturization, high mobility, low power dissipation, and low cost. This instrument succeeds in flight testing in early 1998. The measuring range of electric field is 1? ?00kV/m . The measuring height is up to about 7.5km. It is mainly applied for insurance of safety launching of spacecraft, detection and preliminary warning of lightning and hail in the weather department. [