伪距定位原理

1.伪距计算公式:

\rho = {\rho }' + \delta _{\rho 1} + \delta _{\rho 2} + c \delta _{tk} - c \delta _{tj}

{\rho }':伪距观测值

\delta _{\rho 1}:电离层改正项

\delta _{\rho 2}:对流层改正项

\delta _{tk}:接收机钟差

\delta _{tj}:卫星钟差

2.伪距定位观测方程:

\sqrt{(X_{i}-X)^{2}+(Y_{i}-Y)^{2}+(Z_{i}-Z)^{2}} - c \delta _{tk} = {\rho }' + \delta _{\rho 1} + \delta _{\rho 2} - c \delta _{tj}

四个未知数:X,Y,Z,\delta _{tk}

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