CAJ | 학술논문

在分析罗兰C系统非时基交叉圆定位原理基础上,详细推导了罗兰C非时基交叉圆定位算法,并根据试验得到的时差测量结果进行了单台链双曲线定位与非时基交叉圆定位算法比较。结果表明,当几何因子GDOP较好时,交叉圆定位方法与单台链双曲线定位算法的定位结果相差不大,但当GDOP较差时,采用非时基交叉圆定位方法能够明显提高定位精度,采用交叉圆定位方法能够有效解决单台链双曲线定位方法在基线延长线附近定位时存在的＂奇异＂现象,扩展罗兰C系统有效作用距离。
재분석라란C계통비시기교차원정위원리기출상,상세추도료라란C비시기교차원정위산법,병근거시험득도적시차측량결과진행료단태련쌍곡선정위여비시기교차원정위산법비교。결과표명,당궤하인자GDOP교호시,교차원정위방법여단태련쌍곡선정위산법적정위결과상차불대,단당GDOP교차시,채용비시기교차원정위방법능구명현제고정위정도,채용교차원정위방법능구유효해결단태련쌍곡선정위방법재기선연장선부근정위시존재적＂기이＂현상,확전라란C계통유효작용거리。
With the analysis of the principle of non-time base cross circular position method for Loran-C,algorithm of the position method is derived in detail.After that,position comparisons between single chains hyperbolic position algorithm and non-time base cross circular position method are analyzed with the measured time-difference from the experiments.The results show that position of cross circular position method is close to that of single chain hyperbolic position algorithm when the geometry dilution of precision（GDOP） is good,but with the deterioration of GDOP,position precision can be improved obviously with non-time base cross circular position method adopted,and with the method,the singularity problem of single chain hyperbolic position algorithm when the anchor point is along the baseline can be solved effectively.