CAJ | 학술논문

基于中尺度气象模式MM5得到的三维气象场数据,建立了渤海湾地区的湿折射率场。采用切比雪夫多项式和微积分等数学方法计算了GNSS卫星信号传播方向上的水汽延时。通过与Bernese软件处理的GNSS结果比较分析来看,二者天顶总延时相差最大不超过2cm,在1cm附近波动。得到的湿延偏差在7mm左右,最大相差10mm.MM5模式积分计算的水汽延时结果可信,具有较理想的精度。
기우중척도기상모식MM5득도적삼유기상장수거,건립료발해만지구적습절사솔장。채용절비설부다항식화미적분등수학방법계산료GNSS위성신호전파방향상적수기연시。통과여Bernese연건처리적GNSS결과비교분석래간,이자천정총연시상차최대불초과2cm,재1cm부근파동。득도적습연편차재7mm좌우,최대상차10mm.MM5모식적분계산적수기연시결과가신,구유교이상적정도。
This paper established Bohai Bay area refractive index of the wet field.Based on three-dimensional data produced by MM5 meteorological model,the GNSS satellite signal propagation delay on the water vapor was calculated by Chebyshev polynomials.Compare with the result produced by Bernese GNSS software,The maximum total zenith delay difference is less than 2 cm,Deviation of the wet delay is 7 mm or so,The maximum difference is 10 mm.the result of MM5 model are credible and have the ideal precision.