KPL/SCLK BepiColombo MPO SCLK File by ESA SPICE Service =========================================================================== This file is a SPICE spacecraft clock (SCLK) kernel containing information required for the BepiColombo MPO spacecraft on-board clock to UTC conversion. This file was generated by the ESA SPICE Service TCP2SCLK Module with ADCSng v3.7.8 from the most recent MPO Time Correlation Packet (TCP) data on June 18, 2023. Production/History of this SCLK file ------------------------------------------------------------------------ This SCLK kernel is intended to be used with CK files with structure IDs on board the spacecraft MPO_SPACECRAFT. The NAIF ID code for MPO_SPACECRAFT is -121000. Usage ------------------------------------------------------------------------ This file must be loaded into the user's program by a call to the FURNSH subroutine CALL FURNSH ( 'this_file_name; ) -- FORTRAN furnsh_c ( "this_file_name" ); -- C cspice_furnsh, 'this_file_name' -- IDL cspice_furnsh( 'this_file_name' ) -- MATLAB spiceypy.furnsh( 'this_file_name' ) -- PYTHON in order to use the SPICELIB SCLK family of subroutines to convert MPO_SPACECRAFT spacecraft on-board clock to ET and vice versa. SCLK Format ------------------------------------------------------------------------ The on-board clock, the conversion for which is provided by this SCLK file, consists of two fields: SSSSSSSSSS:FFFFF where: SSSSSSSSSS -- count of on-board seconds FFFFF -- count of fractions of a second with one fraction being 1/65536 of a second; normally this field value is within 0..65536 range. References ------------------------------------------------------------------------ [1] SCLK Required Reading Document [2] TIME Required Reading Document [3] KERNEL Pool Required Reading Document [4] "BepiColombo OBC HW/SW ICD, BC-TAM-IF-00002'' Contact Information ------------------------------------------------------------------------ If you have any questions regarding this file contact the ESA SPICE Service (ESS) at ESAC: Alfredo Escalante Lopez (+34) 91-8131-429 spice@sciops.esa.int Kernel DATA ------------------------------------------------------------------------ The data used to generate this kernels has been obtained from the GDDS for MPO_SPACECRAFT and processed in order to insert an additional time correlation packet (TCP) between each pair of original valid TCP records to force continuity between them. Each TCP record inserted has the UTC "validity start time" equal to the time of the second TCP record in each pair minus 60 seconds. The on-board clock (OBT) value for this extra packet is computed using the gradient from the first TCP record in the pair, while the gradient of the extra packet is computed so that the linear function ``passes'' through the extra packet's UTC/OBT point and through the second packet's UTC/OBT point, thus forcing continuity between the two original trends. When such a ``continuous'' data stream is processed, no additional adjustments to the gradients are performed and the correlation function stored in this SPICE SCLK file almost completely matches time correlation in the GDDS (except for short intervals before each TCP record.) \begindata SCLK_KERNEL_ID = ( @2023-06-17/13:36:11.478 ) SCLK_DATA_TYPE_121 = ( 1 ) SCLK01_TIME_SYSTEM_121 = ( 2 ) SCLK01_N_FIELDS_121 = ( 2 ) SCLK01_MODULI_121 = ( 4294967296 65536 ) SCLK01_OFFSETS_121 = ( 0 0 ) SCLK01_OUTPUT_DELIM_121 = ( 2 ) SCLK_PARTITION_START_121 = ( 0.0000000000000E+00 ) SCLK_PARTITION_END_121 = ( 1.0000000000000E+14 ) SCLK01_COEFFICIENTS_121 = ( 0.0000000000000E+00 -1.1447930612000E+07 1.0000000000000E+00 3.8385987216952E+13 5.7427575128730E+08 1.0272229747801E+00 3.8385991044904E+13 5.7427581128730E+08 9.9999324669703E-01 3.9629216991945E+13 5.9324580565924E+08 -8.9382705051237E-01 3.9629212592705E+13 5.9324586565924E+08 9.9997877242721E-01 3.9631235980254E+13 5.9327673944766E+08 1.0274497830509E+00 3.9631239807361E+13 5.9327679944766E+08 9.9999999556504E-01 3.9655736306090E+13 5.9365058635287E+08 9.9999490382884E-01 3.9655740238270E+13 5.9365064635287E+08 9.9999999355737E-01 3.9702870339947E+13 5.9436979462821E+08 1.0000180148350E+00 3.9702874272036E+13 5.9436985462821E+08 9.9999999453716E-01 3.9820327722061E+13 5.9616205203701E+08 1.0003358299451E+00 3.9820331652901E+13 5.9616211203701E+08 1.0000000012492E+00 4.0139544005733E+13 6.0103290600109E+08 1.0000623960484E+00 4.0139547937648E+13 6.0103296600109E+08 1.0000000032936E+00 4.0240061017836E+13 6.0256667389477E+08 9.9994301325998E-01 4.0240064950220E+13 6.0256673389477E+08 1.0000000016667E+00 4.0341772653598E+13 6.0411867028922E+08 9.9895590990961E-01 4.0341776589867E+13 6.0411873028922E+08 9.9999999254142E-01 4.0563107235097E+13 6.0749596789264E+08 9.9995107294108E-01 4.0563111167449E+13 6.0749602789264E+08 9.9999998392601E-01 4.0648049348418E+13 6.0879208165856E+08 1.0001392637892E+00 4.0648053280030E+13 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7.3347635563937E+08 9.9999999917971E-01 4.8845601278354E+13 7.3387679750631E+08 9.9998506925941E-01 4.8845605210572E+13 7.3387685750631E+08 9.9999999487341E-01 4.8872442208348E+13 7.3428635759235E+08 9.9997004757635E-01 4.8872446140626E+13 7.3428641759235E+08 9.9999998864566E-01 4.8937847188569E+13 7.3528435837605E+08 1.0001666545404E+00 4.8937851120073E+13 7.3528441837605E+08 9.9999999069447E-01 4.9017048952043E+13 7.3649288137705E+08 1.0000911835520E+00 4.9017052883845E+13 7.3649294137705E+08 9.9999999084597E-01 4.9060320545657E+13 7.3715315349583E+08 1.0000112256674E+00 4.9060324477773E+13 7.3715321349583E+08 9.9999999354997E-01 4.9083901114746E+13 7.3751296442388E+08 1.0001943727573E+00 4.9083905046141E+13 7.3751302442388E+08 9.9999999952316E-01 4.9123977530865E+13 7.3812448201521E+08 1.0000099322193E+00 4.9123981462986E+13 7.3812454201521E+08 1.0000000022247E+00 4.9157462708269E+13 7.3863542527568E+08 1.0000102262748E+00 4.9157466640389E+13 7.3863548527568E+08 1.0000000054276E+00 4.9197092868306E+13 7.3924013353208E+08 1.0000258253727E+00 4.9197096800364E+13 7.3924019353208E+08 1.0000000109950E+00 4.9219746306760E+13 7.3958579757634E+08 1.0000099739434E+00 4.9219750238881E+13 7.3958585757634E+08 1.0000000149602E+00 4.9242408745551E+13 7.3993159895525E+08 1.0000156603722E+00 4.9242412677649E+13 7.3993165895525E+08 1.0000000201996E+00 4.9265305824587E+13 7.4028098066242E+08 1.0000135681881E+00 4.9265309756694E+13 7.4028104066242E+08 1.0000000254306E+00 ) \begintext End of SCLK file.