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郭范春 《测绘与空间地理信息》2013,36(6):225-226
通过两个实验区,应用X-pro、Orima软件,在空三加密、坐标转换、DEM编辑、DOM生成等工序环节,利用CQG2000似大地水准面成果,采取设置检查点、自由网平差和特殊区域区别对待的DEM编辑方法等措施,实现ADS80航摄影像数据制作DOM的精度控制。 相似文献
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Inpho全数字摄影测量系统从2008年开始针对三线阵摄影测量系统提出解决方案以来,已经针对主流三线阵相机:ADS40/80和JAS-150具有成熟的数据处理流程。本文重点就Inpho高效率的进行ADS80数据空三加密、DTM提取、正射校正和镶嵌匀色提出解决方法。 相似文献
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Preliminary new orbital elements were computed for the visual binary stars A 1 ‐ ADS 1345, A 2629 ‐ ADS 3610, BU 560 ‐ ADS 4371, STF 3115 ‐ ADS 4376, STF 1426 AB ‐ ADS 7730 and STF 2437 ‐ ADS 11956. Using Straizys and Kuriliene's data, we derived new formulae for computing dynamical parallaxes for luminosity classes IV and V. The values found for those systems are in agreement with the Hipparcos parallaxes and the corresponding systemic masses are consistent with the spectral types. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
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ADS40是线阵数码航空摄影机的典型代表,具有十分广阔的应用前景。ADS40的三个不同投影方向的单波段影像需要进行彩色合成,来满足提取信息的需要和更广泛的应用。本文根据ADS40单波段影像自身的特点,采用了特殊的彩色影像合成方法,合成了令人满意的真彩色影像。 相似文献
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ADS40机载数字传感器平差数学模型及其试验 总被引:9,自引:0,他引:9
ADS40是一种集成POS的新型高分辨率机载三线阵扫描数字传感器,飞行过程同步记录影像数据和POS数据。POS的精度不能满足高精度的制图应用,要获取更高精度、更高可靠性的定向数据,必须进行空中三角测量。从共线条件方程出发,结合线阵影像的成像特点,用两种方法推导并建立光束法平差的数学模型并给出试验结果。 相似文献
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A severe Asian Dust Storm (ADS) event occurred on 16-17 April 2006 in northern China. The mineral compositions of dust samples were analyzed using X-ray diffraction (XRD). The results indicated that dust particles of the "17 April 2006" dust storm were dominated by quartz (37.4%) and clay (32.9%), followed by plagioclase (13.7%), with small amounts of calcite, K-feldspar, dolomite, hornblende and gypsum (all less than 10%). The clay fractions with diameter less than 2 μm were separated from the dust storm particles by centrifuging and were further analyzed by XRD. The results revealed that the clay species were mainly illite/smectite mixed layers (I/S) (49%) and illite (34%), with small amount of kaolinite (8%) and chlorite (9%).
In order to evaluate the feasibility of using the mineralogy to trace the sources of dust particles, the XRD results of the "17 April 2006" dustfall particles were compared with the dust particles over past years. The results confirmed that the finer dust particles represented by the ADS PM10 displayed a smaller quartz/clay ratio than the dustfall particles. The dust storm particles, either from the ADS PM10 or from the "17 April 2006" dustfall, showed a lower level of dolomite contents and lower dolomite/clay ratios compared with the non-dust storm dustfall particles. This implies that dolomite could be used to distinguish between the dust contributions from local and non-local sources. Similar trends were found for the gypsum and the gypsum/clay ratio. Moreover, the two dustfall samples had a lower level of illite/smectite mixed layers and a higher level of illite than airborne PM10, implying that the dustfall particles tend to be enriched with illite in its clay fraction. 相似文献
In order to evaluate the feasibility of using the mineralogy to trace the sources of dust particles, the XRD results of the "17 April 2006" dustfall particles were compared with the dust particles over past years. The results confirmed that the finer dust particles represented by the ADS PM10 displayed a smaller quartz/clay ratio than the dustfall particles. The dust storm particles, either from the ADS PM10 or from the "17 April 2006" dustfall, showed a lower level of dolomite contents and lower dolomite/clay ratios compared with the non-dust storm dustfall particles. This implies that dolomite could be used to distinguish between the dust contributions from local and non-local sources. Similar trends were found for the gypsum and the gypsum/clay ratio. Moreover, the two dustfall samples had a lower level of illite/smectite mixed layers and a higher level of illite than airborne PM10, implying that the dustfall particles tend to be enriched with illite in its clay fraction. 相似文献
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