The paper summarizes the achievement of remote sensing of geology, analyses the development tendency of remote sensing technique, deals with the technique potentiality and good prospects of this technique which be used at the land investigation, planning, mineral products survey as well as disaster monitor. Meanwhile, it points out that the remote sensing technique is very important on the theory study of geoscience and environment science.
This paper has reviewed the achievement, methodology, technique and problems of remote sensing for landslide and debrisflow for 20 years in China, and pointed out the urgent needs toimprove the current remote sensing technique, relevant knowledge accumulation, and the available new technique support, as well as prospect the content and advantage of new remote sensing technique for landslide and debrisflow.
Petroleum remote sensing is a very important branch of remote sensing technology. In this paper, the authors look back the grown up courses and the great achievements of petroleum remote sensing technology during the last twenty years. It is a process of growing up from nothing, from small to large, and the grown up courses of petrolem remote sensing passed through a process of building an enterprise through arduous effort, growing in strenght, and developing steadily. The authors also discuss the applications of petroleum remote sensing technology in petroleum research, petroleum engineering construction, environment monitoring. Finally, the authors prospect the prospects of petroleum remote sensing applications.
This paper introduces the achievements obtained in recent ten years on the application of remote sensing technology in water resources sector, especially to flood and water logging monitoring, water resources and environment investigation, drought monitoring, soil erosion investigation, sedimentation of river channel, river mouth, lake and reservoir, site selection of large-sized water project and lineation of water diversion between watersheds. The suggestions for future development are also proposed briefly.
This paper discusses the shortage of the comprehension theories and methods of the images at present, introduces the making progresses of the relating to theoretical and methodical studies, and also indicates that the recent positive results of concerning domestic and abroad researches ought to be summarized and refimed, that the researches on the shorter fields of the theories and methods should be developed, and that it will be a work with the theoretical significances and practical application values.
The paper introduces the sorts, the technical parameter and the data feature of hyperspectral imaging instrument, points out that some functions of data processing package must be have. At last, it gives the application future of the hyperspectral imaging instrument in briefly.
Based on a great amount of available data, this paper deals with the development condiations about the site of absolute radiometric calibration, analyses the characteristics of Dunhuang Site (for the calibration in visible and near_infrared wavelengths) and Qinghai Lake Site (for the calibration in thermal infrared wavelengths), they are mainly the characteristics of greography, ground surface features, meteorology, atmosphere, and environmental effects, etc.. Finally, it give some suggestions on how to exploit the fully favourable conditions and avoid unfavourable ones in the future works.
Authors had analized some problems about the retrieval of LST using multi_band thermal infrared data and the possibility to retrieve component temperature of mixed pixel by multi_angle thermal infrared data based on the law of thermal radiant direction of non_isothermal mixed pixel.
The purpose of the paper is to clarify scientific significance of the remote sensing for obtaining levity parameters in time and space on the earth surface. First of all, Several regional imageries of the levity parameters, such as leaf area index, ground surface temperature and the net radiation were made using remote sensing data and the ecosystem network data. Secondly, measurements at the ecological stations were indicated in the imageries. Thirdly, averages and deviations for several different scale areas were made by using imaging processing. Fourthly, differences between the measurements at points and averages in the areas were pointed out. Finally, analyses the possible error when using measurements at points to express regional distribution. The analyses indicated the traditional expression of the regional averages for the parameters using single point measurements error beget very big error for leaf area index . There the leaf area index has extreme inhomogeneous distribution in space. The ground surface temperature takes second place. Meantime limitation of the remote sensing was also discussed. Effective and feasible way which express regional distribution well is combination between remote sensing method and point measurements。
This paper studies the model and techniques of extracting shallow water depth from TM images and image chart production in Nansha Islands and nearby sea area. On the basis of the conventional multi-band linear regression model, we develop a improved model by introducing a series of techniques including data pre-processing by group averaging, tidal correction, piecewise linear regression, data normalization, etc.. The improved model is more reasonable and accurate and suitable for large sea area. And we also present a set of techniques for remote sensing image chart production.
Taking Miaoershan district in Guangxi Province of South China as an example, the characteristics and the processing techniques of the airborne hyperspectral data are discussed in detail. A series of programs for strip_removing, registration between bands, tangent correction illumination calibration and relative reflectance calibration has been developed. On the basis of software ENVI (the Environment for Visualizing Images), a field spectral library in the study area has been set up and a method for geometric corrections with satisfactory mosaic images has been developed. Great achievements in some aspects such as pure pixel extraction, spectral unmixing, interpretation, silicified zones and other alteration zones are successfully delineated and specific uranium prospecting areas are proposed.