高职院校《卫星遥感与航空摄影测量》课程 教学改革与探索

针对当前高职院校《卫星遥感与航空摄影测量》课程存在的问题,结合人才培养方案,从理论与实践一体化教学、类比法教学、激发思维、线上线下混合式教学、结合企业的一线生产技术教学等方面提出了课程改革措施并应用于实践。

Practical Research of IKONOS-2 Geopositioning and Its Accuracy in Tibet of China

This paper presents the studies of the refining of IKONOS-2 RPC, the transform of the datum, the mode of the control point distribution and the method of IKONOS stereo triangulation, so that IKONOS imagery can be used to collect the precise geospatial data and produce the large scale map.The transform between the IKONOS-2 image space and the national coordinate system based on the RPC have been developed, and the results of block adjustment with various control schemes in a practical project near Himalayas have been examined and analysed. The encouraging results of high positioning accuracy have been obtained.

FY-4 Meteorological Satellite

FY-4 is the second generation of Chinese geostationary satellite for quantitative remote sensing meteorological application. The detection efficiency, spectral bands, spatial and time resolution have been greatly improved with respect to those of first generation, as well as the radiometric calibration and sensitivity. The combination of multichannel detection and vertical sounding was first realized on FY-4, because both the Advanced Geostationary Radiation Imager(AGRI) and Geostationary Interferometric Infrared Sounder(GIIRS) are on the same spacecraft. The main performance of the payloads including AGRI, GIIRS and Lightning Mapping Imager, and the spacecraft bus are presented, the performance being equivalent to the level of the third generation meteorological satellites in Europe and USA. The acquiring methods of remote sensing data including multichannel and high precision quantitative observing, imaging collection of the ground and cloud, vertical observation of atmospheric temperature and moisture, lightning imaging observation and space environment detection are shown. Several innovative technologies including high accuracy rotation angle detection and scanning control, high precision calibration, micro vibration suppression, unified reference of platform and payload and on-orbit measurement, real-time image navigation and registration on-orbit were applied in FY-4.

Surface latent heat flux anomalies prior to the Indonesia Mw9.0 ear thquakeof 2004

The temporal and spatial variations of surface latent heat flux (SLHF) before and after the Mw9.0 earthquake that occurred on the west coast of Sumatra, Indonesia on 26 December 2004 are summarized. It is found that before the earthquake significant SLHF anomalies occurred at the epicentral area and its vicinity. The largest SLHF anomaly oc- curred on the subduction zone in the middle part of Burma micro-plate, where the middle part of the rup- ture zone is located and the aftershocks are concen- trated. The developments of the anomaly involved growing of the anomaly from small to large and spreading of the anomaly from disordered to con- centrated. The anomaly began to occur on the east extensional boundary of the Burma micro-plate and its adjacent oceanic basin, and then propagated to the west compressive boundary, where the subduc- tion zone exists. Finally, the anomaly disappeared after the main shock. The seismic source is consid- ered to be a dissipation system. The increase of stress prior to an earthquake may enhance the ex- change of energy and material between the seismic source system and the outer system, resulting in the increase of the rate of energy exchange between sea surface and atmosphere, which is believed to be the main reason of the generation of SLHF anomaly.

湖南省第二测绘院 围绕“五大业务”体系 推动测绘工作上台阶

湖南省第二测绘院成立于1974年,是直属于湖南省自然资源厅的公益二类事业单位,是全国首批甲级测绘单位、湖南省唯一具有航空摄影甲级资质的技术单位、湖南省测绘地理信息行业的支柱单位之一,是湖南省目前唯一同时具备大规模全野外实地测量、中低空航空摄影、航空摄影测量、卫星遥感测量等空间数据采集和处理能力的综合服务型测绘地理信息单位。