[Retracted] An Improved Orbit Model of Space Target Radar Based on Least Square Method and Its Program Implementation

Table 1

The meaning of space environment parameters.

Column	Name	Description
001–004	yyyy	Year
006–007	mm	Month
009–010	dd	Day
048–050	Ap0	Ap index (00:00–03:00)
052–054	Ap3	Ap index (03:00–06:00)
056–058	Ap6	Ap index (06:00–09:00)
060–062	Ap9	Ap index (09:00–12:00)
064–066	Ap12	Ap index (12:00–15:00)
068–070	Ap15	Ap index (15:00–18:00)
072–074	Ap18	Ap index (18:00–21:00)
076–078	Ap21	Ap index (21:00–24:00)
114–118	Obs F10.7	F10.7, previous day (observed)
126–130	Obs Lst81	F10.7, arithmetic mean for the previous 81 days (observed)