摘要
提出了一种基于重力梯度探测潜艇的新方法。借助计算机代数系统Mathematica,计算了模拟潜艇在不同位置产生的重力垂直梯度,分析了其变化情况,结果表明如果现有的重力梯度仪精度为10-4E,即使下潜深度达300m,在海面上100m范围内也能够探测到;当重力梯度仪的精度达到或超过10-6E时,可在海面上1000m范围内实现探测。
A new method for detecting submarine based on the gravity gradient is put forward. The gravity vertical gradient of the submarine is calculated at different places with the help of computer algebra system Mathematica, and its characteristic is also analyzed. The results show that if the precision of exsiting gravity gradiometers is 10-4E, the submarine could be detected within the range of 100m on the sea surface although it is 300m underwater, and the detection range will be enlarged to 1000m when the precision of gravity gradiometers is accurate up to 10-6E.
出处
《海洋测绘》
2010年第2期24-27,45,共5页
Hydrographic Surveying and Charting
基金
国家自然科学基金项目(40774002
40904018)
关键词
重力梯度
重力垂直梯度
潜艇探测
计算机代数系统
gravity gradient
gravity vertical gradient
gravity gradiometer
computer algebra system
