METHOD AND DEVICE FOR MEASURING DEPTH OF SUBSTANCE IN BURIED MEDIUM AND SPECIFIC INDUCTIVE CAPACITY OF BURIED MEDIUM

摘要

PURPOSE:To improve the measuring accuracy of buried depth by finding out the buried depth based on a reflected wave receiving time and finding out the specific inductive capacity of a buried medium and an electromagnetic wave propagation speed in the buried medium based on the buried depth and the reflected wave receiving time. CONSTITUTION:The time T0 of a leading zero crossing point of a reflected wave and the time T1 of a trailing zero crossing point are observed and the wavelength lambda of an apparent reflected wave is found out by a prescribed equation. Thereby, the time Tu of a leading zero crossing point of a real reflected wave is found out by a prescribed equation. A vertex position coordinate E of a real reflected image is found out from the vertex position coordinate C of an apparent reflected image and an end point coordinates D by using the time position calculating method of the real reflected wave and apparent buried depth DA is found out by the trigonometry. The real buried depth D0 is found out by a prescribed equation. The specific inductive capacity of the buried medium and the electromagnetic wave propagation speed in the buried medium are respectively found out by prescribed equations. Since the reflected wave from the real buried medium, the measuring accuracy of the buried depth can be improved.