| 朱永红,刘锐,李源洪,刘旭,张雅静,杜永麾.手持GPS在地质调查中的具体应用实践——以黔西南某地金矿普查为例[J].贵州地质,2017,34(2):128-135 |
| 手持GPS在地质调查中的具体应用实践——以黔西南某地金矿普查为例 |
| The Application Effect of Handheld GPS in Geological Exploration——Taking the Reconnaissance Survey of Gold Deposit in Southwest Guizhou as an Example |
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| DOI： |
| 中文关键词: 手持GPS 地质调查 校正参数 应用效果 黔西南 |
| 英文关键词:Handheld GPS Geological survey Technical route Correction parameters Application effect Southwest Guizhou |
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| 中文摘要: |
| 笔者在黔西南某地金矿的地质调查中通过对手持GPS的运用实践，总结出应用技术路线。认为正确设置和采集原始点坐标，并计算调查区的校正参数是关键，验证误差评价不可少，乃是精度的保证、应用的基础。利用已知点校正时，原始点数据采集要点是正确设置对应坐标系统的目标椭球，投影设为测区对应的中央子午线，其它参数选项卡全关闭，同时，采集原始点数据时，最好为10次及以上平滑方式、差分3D状态下采集。在调查区实践中，坐标转换方法使用经典的“一步法”，计算得到四参数及校正参数数据，并应用于项目工程，用其它已知点验证，其平均偏差为±2.9 m，精度较高，完全符合地质勘查规范的要求。经过参数校正后的手持GPS，完全可以取代地形图人工定点。米级带SBAS功能多星机型实际精度接近亚米级的单星机型，支持多星的手持机定位快，精度高，因此，笔者建议今后使用多星和SBAS定位技术的GPS，以期取得事半功倍的效果。 |
| 英文摘要: |
| The geological exploration of gold deposit in southwest Guizhou, the author summarizes the application of hand GPS in the application of the technology. Believes that the right sets and collect the original point coordinates, and calculate the correction parameters of the survey area are the key, verify the error evaluation is indispensable, but to ensure the accuracy of the basic applications. Use known point corrections, the original point data collection points are set up correctly corresponding to the coordinate system of the target ellipsoid, projection area corresponding to the measured central meridian, the other parameters tab fully closed, while collecting raw point data, preferably 10 or more times in a smooth manner, the difference in the 3D state acquisition. In a mining practice, coordinate conversion method uses the “one step”, calculated by four parameter and calibration parameters mine data, and applied to project, with other known point validation, error evaluate the average deviation of only ± 2.9 meters, it shows a high precision, fully in line with the geological survey specifications. After parameter corrected handheld GPS, can completely replace the artificial topographic map point. Meter-star models with multi-function close SBAS sub-meter single-star models, support for multi-satellite handset positioning, high precision, and therefore. Suggesting that the use of multiple SBAS satellite positioning technology and GPS in the future, In order to achieve a multiplier effect. |
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