Hyperspectral soil data acquisition and analysis method based on mobile phone

Abstract

The invention discloses a hyperspectral soil data acquisition and analysis system based on a mobile phone. The system comprises a handheld spectrometer, a smart phone, spectrum analysis software, a cloud service platform, and a model library. A method comprises the following steps of firstly acquiring a visible light-near infrared spectrum of a ground object by the handheld spectrometer, importingacquired spectral data into mobile phone end spectrum analysis software, preliminarily interpreting whether spectral information is correct or not, and selecting to save or delete the spectral information; secondly, performing metadata editing on the saved spectrum; and finally, synchronously saving the saved spectrum and longitude and latitude coordinates of a sampling point acquired by the mobile phone to the cloud service platform, calculating a sheet number where the sampling point is located through the longitude and latitude coordinates, and calling a corresponding soil composition inversion model to calculate soil composition contents. Compared with a traditional geochemical survey method, the hyperspectral soil data acquisition and analysis system provided by the invention saves the survey cost, shortens the survey period, and realizes the rapid determination of the soil composition contents; the field operation is facilitated; and the determination precision of the soil composition contents is improved.

Description

technical field

[0001] The invention relates to a rapid soil information survey method, in particular to a mobile phone APP-based hyperspectral soil data collection and analysis method, which belongs to the field of geological survey. Background technique

[0002] The existing soil information survey mainly adopts two methods: geochemical survey and remote sensing technology survey. Geochemical investigation is to collect soil samples in accordance with the sample collection standards, and carry out testing and analysis of multiple geochemical elements, including the total and effective content, to evaluate the soil quality. Mainly investigate the nutrient elements in the soil (such as nitrogen, phosphorus, potassium, calcium, iron, copper, zinc, etc.), life and health elements (such as selenium, strontium, fluorine, iodine, etc.), heavy metal pollution elements (such as mercury, cadmium, lead, etc.) , chromium, arsenic) and organic pollutant content and other 54 chemical i...

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