The file name structure is as follows:
AirMSPI_ER2_GRP_ELLIPSOID_yyyymmdd_hhmmssZ_tttt_aaa[A,N,F]_Fff_Vvvv.hdf
or
AirMSPI_ER2_GRP_TERRAIN_yyyymmdd_hhmmssZ_tttt_aaa[A,N,F]_Fff_Vvvv.hdf
yyyymmdd: Year-month-day
hhmmss: Hour-minute-second in UTC of the central observation
tttt: Target name
aaa: Mean viewing angle (reported to the nearest tenth of a degree x
10)
Fff: File format version
Vvvv: Version number
For more information, see the Data
Product Specifications (DPS)