【摘要】：在短波波段,由于電離層反射傳播,電波傳播路徑與實際地面距離存在較大差異,傳統(tǒng)時差定位方法不再適用.文章提出一種基于電離層射線追蹤技術的時差定位技術,在此基礎上,仿真分析了電離層參數(shù)對定位精度的影響.結果表明:在準確獲取電離層信息情況下,本方法可準確定位目標;電離層測量誤差對定位精度影響較大;站點增加可提高定位精度,降低對電離層參數(shù)獲取精度要求.仿真結果為短波時差定位系統(tǒng)研制以及電離層參數(shù)獲取精度要求提供了理論依據(jù).
[Abstract]:In the short wave band, there is a great difference between the propagation path of the ionosphere and the actual ground distance, and the traditional time difference positioning method is no longer applicable. In this paper, a time difference positioning technique based on ionospheric ray tracing technology is proposed. On this basis, the influence of the ionosphere parameters on the positioning accuracy is simulated and analyzed. In the case of accurate acquisition of ionosphere information, this method can accurately locate the target; the ionospheric measurement error has a great influence on the positioning accuracy; the increase of the site can improve the positioning accuracy and reduce the accuracy requirements for the acquisition of the ionosphere parameters. The simulation results provide a theoretical basis for the development of the short wave time difference positioning system and the requirement for the accuracy of the ionospheric parameters.
【作者單位】： 海軍參謀部信息通信局;中國電波傳播研究所;
【基金】：國家自然科學基金(No.61331012)
【分類號】：TN011

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