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Method for identifying ancient river surface calcium rock

A calcium junction and river channel technology, applied in the field of geoscience information extraction, can solve the problems of long work cycle, high work cost, limited identification range, etc., and achieve the effect of accurate identification and reduction of investigation cost.

Active Publication Date: 2020-05-15
BEIJING RES INST OF URANIUM GEOLOGY
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  • Application Information

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Problems solved by technology

[0006] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a method for identifying calcareous rocks on the surface of paleo-channels, which is used to solve the technical problems of high field work costs, long working cycle and limited identification range in the prior art

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  • Method for identifying ancient river surface calcium rock
  • Method for identifying ancient river surface calcium rock

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Embodiment Construction

[0029] The present invention is described in further detail below in conjunction with embodiment.

[0030] The present invention is a method for identifying calcareous rocks on the surface of paleo-channels, the flow chart of the method is as follows figure 1 As shown, it specifically includes the following steps:

[0031] Step 1, optical and radar remote sensing data acquisition. Select and cover the research area, Landsat7 ETM+ with a maximum spatial resolution of 15 meters and 8 bands of visible-short-wave-thermal infrared and ASTER optical remote sensing with a maximum spatial resolution of 15 meters and 15 bands of visible-short-wave-thermal infrared The data, as well as the data of the RadarSat-2 synthetic aperture imaging radar equipped with a C-band sensor with a frequency of 5.4GHZ and a full-polarization fine mode with a nominal resolution of 8 meters; the collection time of both data is at noon, The sky is cloudless and the signal-to-noise ratio is high;

[0032]...

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Abstract

The invention belongs to the technical field of geoscience information extraction, and particularly relates to a method for identifying ancient river surface calcium rock. The method comprises the following steps: 1, acquiring optical and radar remote sensing data; 2, preprocessing the optical remote sensing data; 3, preprocessing radar remote sensing data; 4, ETM + optical remote sensing data processing and information extraction; 5, radar remote sensing data processing and information extraction; 6, preliminarily identifying an ancient river channel; 7, precisely identifying the ancient river channel; 8, preliminary identification of ancient river surface calcium rock; and 9, accurately identifying the ancient river surface calcium rock. By means of the method, the distribution range ofthe ancient river channel surface calcium-bound rock can be rapidly and accurately recognized, and the method has great significance in developing ancient environment research and finding calcium-bound rock type uranium ore.

Description

technical field [0001] The invention belongs to the technical field of geoscience information extraction, and in particular relates to a method for identifying calcareous rocks on the surface of paleochannels. Background technique [0002] Calcium concretion rocks refer to chemical deposits composed of calcium carbonate or sedimentary clasts cemented by calcium carbonate under dry and hot climate conditions in the continent, which can reveal relevant paleoenvironmental (paleochannel) evolution records, and are mostly found in grasslands and desert areas. Therefore, calcareous rocks have important indication significance for the study of paleoenvironmental evolution history. In addition, the calcareous concretion rocks developed in paleochannels can also form uranium deposits. This type of uranium deposits was discovered as early as the 1970s as a type of uranium mineralization with relatively shallow burial and easy mining. It is formed by the concentration and precipitati...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/46G01N21/17G01N21/31G01S7/41G01S13/90
CPCG01N21/17G01N21/314G01S13/90G01S7/418G01N2021/1793G01N2021/3148G06V20/188G06V20/182G06V10/44G01S13/9027
Inventor 王俊虎武鼎张杰林郭帮杰
Owner BEIJING RES INST OF URANIUM GEOLOGY