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本文简要地介绍了高精度航磁测量中,气压测高方法研究成果。首先介绍1241M小型气压高度传感器的主要技术指标与标定。根据试验提出,气压高度日变测量的必要性及建站的最佳控制范围。从几个方面探讨影响气压测高精度的问题。利用国家已知高程点来验证1241M系统测高方法的难确度。根据55个点的对比结果,其准确度优于±5m。在机场本场理相条件下,与263、265及ALT－55等无线电测高仪不同飞行高度对比,其一致性很好。全面地研究出一套适于我国高精度航磁测量的气压测高方法技术及数据处理方法。通过1985、1987两年生产实践,都达到了优于±10m的高粘度。证实该方法可行,技术先进,精度高,结果可靠。
This article briefly introduces the research results of barometric altimetry in high-precision aeromagnetic surveying. First introduce the 1241M small pressure sensor height of the main technical indicators and calibration. According to the test, the necessity of measuring the height of baroclinic and the optimal control scope of the station. Discuss the problems that affect the precision of barometric altimetry from several aspects. Use nationally known elevation points to verify the accuracy of the 1241M system altimetry. Based on the comparison of 55 points, the accuracy is better than ± 5m. Under the conditions of this field at the airport, the consistency with the flight altitude of radio altimeter 263, 265 and ALT-55 is very good. A comprehensive study of a set of barometric altimeter methods and data processing methods suitable for China’s high-precision aeromagnetic survey. Through 1985,1987 two years of production practice, have achieved better than ± 10m high viscosity. Confirmed that the method is feasible, advanced technology, high precision and reliable results.