导航定位学报
導航定位學報
도항정위학보
Journal of Navigation and Positioning
2015年
3期
135-138
,共4页
GNSS水准%跨河%高程传递%精度分析
GNSS水準%跨河%高程傳遞%精度分析
GNSS수준%과하%고정전체%정도분석
GNSS leveling%River-crossing%Height transfer%Accuracy analysis
针对国家一、二等水准测量规范(2006)对利用 GNSS 水准技术实现跨河高程传递的要求展开研究,本文采用规范方法和基于移去恢复技术的高差拟合法对利用 GNSS 水准实现二等跨河高程传递进行有关实验,实验结果表明:在海拔较低(小于500 m),且高程异常变化平缓的测区,按照规范较容易达到二等水准测量精度要求,而对于海拔较高,且高程异常变化较大测区,虽然规范不建议进行 GNSS 跨河水准测量,但采取基于移去恢复技术的高差拟合法同样可以达到二等水准测量要求。
針對國傢一、二等水準測量規範(2006)對利用 GNSS 水準技術實現跨河高程傳遞的要求展開研究,本文採用規範方法和基于移去恢複技術的高差擬閤法對利用 GNSS 水準實現二等跨河高程傳遞進行有關實驗,實驗結果錶明:在海拔較低(小于500 m),且高程異常變化平緩的測區,按照規範較容易達到二等水準測量精度要求,而對于海拔較高,且高程異常變化較大測區,雖然規範不建議進行 GNSS 跨河水準測量,但採取基于移去恢複技術的高差擬閤法同樣可以達到二等水準測量要求。
침대국가일、이등수준측량규범(2006)대이용 GNSS 수준기술실현과하고정전체적요구전개연구,본문채용규범방법화기우이거회복기술적고차의합법대이용 GNSS 수준실현이등과하고정전체진행유관실험,실험결과표명:재해발교저(소우500 m),차고정이상변화평완적측구,안조규범교용역체도이등수준측량정도요구,이대우해발교고,차고정이상변화교대측구,수연규범불건의진행 GNSS 과하수준측량,단채취기우이거회복기술적고차의합법동양가이체도이등수준측량요구。
The requirements of river-crossing leveling based on GNSS leveling are investigated according to specifications for the first and second order leveling(2006 ),the experiments of second order river-crossing leveling are carried out using standard method and level difference fitting method based on remove-restore technology,the results show that the second order leveling can be achieved according to the specifications at the lower altitude (less than 500m)and smooth height anomaly area, and for high altitude and height anomaly changes larger area,although the GNSS river-crossing leveling is not recommended in specifications,but if level difference fitting method based on remove-restore technology can be adopted,the second order level-ing can also be achieved.