Methodological Tests

1. Preparation of Test Base for Coal Remote Sensing


Xishan Goalfield, Taiyuan, have been selected as a test base for coal geology (1200km²), and Kailuan Coal Mine as another test base for productive coal mine (2400km²).


2. Test Projects.



1. Space Remote Sensing Tests


Large-area tests were conducted by applying the China's Land Reconnaissance Satellite images. U.S. Landsat MSS, TM image data, France satellite data, USSR photo image and U.S. space shuttle radar scanning image.


2. Airborne Remote Sensing Tests.


The remote sensing flight tests involved 4 kinds of aircracts and more than 40 flights. It involved a series of tests by using 8 means 23 bands, such as black and white photography, colour photograph, colour infrared photograph, multiband photography, thermal infrared scanning, multispectral scanning radar scanning, and GPS space position test.


3. Ground Tests


In involved bands tests, infrared temperature measure and ground photography including black, white, colour and multiband.


4. Digital Processing Test.


Digital position processing was made by using BC-2 Analgtica plotter for remote sensing image data.

By applying the I2S image processing and Intergraph Graphic Processing system with VAX 11/785 computer as its host, the digital thematica and serial maps were compiled and the Coal Remote Sensing Geograph Information System is being created.


5. Four Colour Plate Printing Tests.


By using CP-241 scanner , the remote sensing thematic map, serial map and different kinds of images were printed.


3. Combined Test


Multi-temporal airborne remote sensing. Daytime and nighttime remote sensing flight tests were made in both rainy and dry seasons in the coal field.

Multidirectional remote sensing flight tests. Remote sensing flight tests were made along and across the strike of the coal measure .

Flight tests by using a combination of multiple kinds if sensors. Flight tests were conducted using a combination of the Swiss RC-10, Aerial Camera and U.S. DS_1230 Double -Channel Thermal Infrared Scanner, as well a combination of the multispectral Aerial Camera and Aerial infrared Scanner.


4. Multi-Level Space Synchronous Remote Sensing Tests


These include tests of low -altitude remote sensing flights and ground synchronous observations, tests of middle-altitude remote sensing, low-altitude remote sensing flight and ground synchronous observations. Three-level space synchronous remote sensing tests have also been conducted by use of China's Land Reconnaissance satellite, aerial and ground observations.


5. Test Results⁴


The results of the tests indicate that the space remote sensing data are applicable to coal field prediction; The SPOT satellite data and USSR photo-image are suitable for coal reconnaissance;

The Airborne Remote Sensing is the main applied in coal industry and is applicable to exploration of coal field , design and production of coal mine.

The optimal methodology, procedure for coal remote sensing work was formulated. The optimal applicable scope for coal remote sensing was determined. The colour infrared photography and thermal infrared scanning were determined to be the optimal methods.

Through methods test, the remote sensing as a important methods, promote ground-based geological work to enter the stage of multi-level space comprehensive exploration. Now the normal Coal geological exploration sequence incorporates remote sensing, geophysical exploration and drilling.