Table 2 Definition of atmospheric delay and its components

(Generic)

\( d = L - D \)

\( d = d^{a} + d^{g} \)

\( d^{a} = L - R = \int_{{\user2{r}_{1} }}^{{\user2{r}_{2} }} {N\,dl}\)

\( d^{g} = R - D \)

Direct

\( d_{d} = L_{d} - D_{d} \)

\( d_{d} = d_{d}^{a} + d_{d}^{g} \)

\( d_{d}^{a} = L_{d} - R_{d} \)

\( d_{d}^{g} = R_{d} - D_{d} \)

Reflection

\( d_{r} = L_{r} - D_{r} \)

\( d_{r} = d_{r}^{a} + d_{r}^{g} \)

\( d_{r}^{a} = L_{r} - R_{r} \)

\( d_{r}^{g} = R_{r} - D_{r} \)

Interferometric

\( d_{i} = L_{i} - D_{i} \)

\( d_{i} = d_{r} - d_{d} \)

\( d_{i} = d_{i}^{a} - d_{i}^{g} \)

\( d_{i}^{a} = L_{i} - R_{i} \)

\( d_{i}^{g} = R_{i} - D_{i} \)

\( d_{i}^{g} = d_{r}^{g} - d_{d}^{g} \)