摘要
为探究阵元间距对单站四阵元海底基准站模式下定位精度影响,通过不同声速修正法降低声速误差的影响,控制其余变量后,对比不同阵元间距对该模式定位内、外符合精度的影响。仿真实验表明,声线跟踪法能显著提高水下航行器的定位精度,尤其是常梯度声线跟踪法效果最佳;阵元间距对均方根误差影响不明显,但对GDOP精度的影响明显,当此情况下,声线作用距离大于7000m时,阵元间距选取6~10m;声线作用距离小于7000m时,阵元间距选取3~5m。
In order to explore the influence of array spacing on the positioning accuracy of a single-station fourelement seafloor geodetic station mode,the influence of sound velocity error is reduced by different sound velocity correction methods,and after controlling the remaining variables,the influence of different array element spacing on the internal and external coincidence accuracy of the mode positioning is compared.Simulation results show that the sound ray tracking method can significantly improve the positioning accuracy of underwater vehicles,especially the constant gradient sound ray tracking method has the best effect.The array element spacing has no obvious effect on the root mean square error,but the influence on the accuracy of GDOP is obvious,and when the sound line action distance is greater than 7000 m,the spacing of the array element is 6-10 m.When the vocal distance is less than 7000 m,the array spacing element is 3-5 m.
作者
王骄阳
曾安敏
孙文舟
WANG Jiaoyang;ZENG Anmin;SUN Wenzhou(School of Geological Engineering and Surveying and Mapping Chang'an University,Xi'an 710054,China;Xi'an Research Institute of Surveying and Mapping,Xi'an 710054,China;National Key Laboratory of Spatial Reference,Xi'an 710054,China)
出处
《海洋测绘》
北大核心
2025年第3期6-10,15,共6页
Hydrographic Surveying and Charting
基金
国家自然科学基金(42388102,42374012)。
关键词
水下导航定位
倒置超短基线
四阵元海底基准站
声速修正
精度分析
underwater navigation and positioning
inverted ultra-short baseline
four-array element seafloor geodetic station
sound velocity correction
accuracy analysis
