Terrain roughness tester

Abstract

The invention discloses a terrain roughness tester, which comprises an electric moving unit, an adjustment bracket platform unit, an imaging unit and a computer, wherein the electric moving unit is fixedly connected to the table top of the adjustment bracket platform unit; after being fixedly connected with the electric moving unit, the imaging unit is arranged below the adjustment bracket platform unit in a way of facing the ground; and under the control of the computer, the electric moving unit drives the imaging unit to finish scanning and imaging a tested area, and processing is performed to obtain the three-dimensional space coordinate information of the tested ground, so that a terrain roughness parameter is conveniently calculated. The terrain roughness tester provided by the invention is used for testing the terrain roughness parameter without calibrating an apparatus on the spot and pasting a marking point on the tested area, can rapidly and automatically obtain the terrain roughness parameter of the tested area, has a simple structure and low cost, is convenient to use and widely applicable to the measurement of a farmland and the earth, and provides reliable data support for agricultural production, the yield estimation of grains and microwave inversion.

Description

technical field [0001] The invention belongs to a device for obtaining three-dimensional information of the earth surface, in particular to an earth surface roughness parameter tester. Background technique [0002] Surface roughness is the roughness of the soil surface. A rough soil surface increases the soil surface area, which can accumulate part of the rainfall, reduce the wind speed, and increase the solar radiation area. At the same time, it increases the evaporation of the soil and reduces the moisture content of the soil profile. Soil surface roughness is an important parameter that characterizes soil hydrological characteristics and affects soil properties, and affects the scattering and thermal radiation characteristics of the soil surface. [0003] There are usually two measurement methods for surface roughness: non-contact measurement and contact measurement. The contact measurement methods mainly include stylus method, chain method and rod ruler method. Most o...

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Problems solved by technology

[0007] The measurement cost of the device used in the contact method measurement in the prior art is low, but the measurement value needs to be obtained by measuring with a ruler, and the measurement process requires manual participation, which takes a long time, and the accuracy and speed of the measurement are difficult to meet the requirements

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