초록 ▼

An acoustic wave source and a radio wave source are installed close to each other on the ground. When an acoustic wave pulse is transmitted vertically into the atmosphere by the acoustic wave source, spherical wavefronts formed in the atmosphere by the acoustic wave are propagated upwardly at the ve

An acoustic wave source and a radio wave source are installed close to each other on the ground. When an acoustic wave pulse is transmitted vertically into the atmosphere by the acoustic wave source, spherical wavefronts formed in the atmosphere by the acoustic wave are propagated upwardly at the velocity of sound. When a continuous radio wave is transmitted from the radio wave source toward the spherical wavefronts, it is reflected by the wavefronts and the reflected radio waves are converged to form a focusing spot on the ground. The position where the spot due to the convergence of the reflected radio waves is formed with the maximum intensity is detected by means of an antenna network formed of a multiplicity of receiving antennas laid out in the pattern of a lattice. The time-course change of such positions of the spots is traced to realize remote measurement of the height distribution of wind direction and speed in the atmosphere under surveillance.

대표청구항 ▼

CM,1. A method for the measurement of wind direction and speed at high altitudes in the atmosphere, comprising the steps of transmitting vertically into the atmosphere a pulse of acoustic waves from an acoustic wave source installed on the ground thereby causing the pulse of acoustic wave to produce

CM,1. A method for the measurement of wind direction and speed at high altitudes in the atmosphere, comprising the steps of transmitting vertically into the atmosphere a pulse of acoustic waves from an acoustic wave source installed on the ground thereby causing the pulse of acoustic wave to produce spherical wavefronts, transmitting continuous radio waves from a radio wave source installed on the ground toward the spherical wavefronts thereby enabling the radio waves to be reflected by the spherical wavefronts, detecting the position of the reflected radio waves formed as a focusing spot on the ground, tracing the time-course change of the positions of maximum intensity of the focusing spot of the reflected radio waves, and calculating the height distribution of wind direction and speed in the atmospheric region based on the time-course change of the position of the focusing spot.