KPL/SCLK Solar Orbiter SCLK File =========================================================================== This file is a SPICE spacecraft clock (SCLK) kernel containing information required for the Solar Orbiter (SOLAR ORBITER) spacecraft on-board clock to UTC conversion. Production/History of this SCLK file -------------------------------------------------------- This file was generated by the NAIF utility program MAKCLK from the most recent SOLAR ORBITER Time Correlation Packet (TCP) data. 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 in order to use the SPICELIB SCLK family of subroutines to convert SOLAR ORBITER 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..65535 range. References -------------------------------------------------------- 1. SCLK Required Reading Document 2. TIME Required Reading Document 3. KERNEL Pool Required Reading Document Inquiries -------------------------------------------------------- If you have any questions regarding this file contact Solar Orbiter SOC at ESAC: sol_spice@sciops.esa.int Kernel DATA -------------------------------------------------------- The data used to generate this kernels has been obtained from the EDDS for Solar Orbiter 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 by the MAKCLK program, 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 EDDS (except for short intervals before each TCP record.) \begindata SCLK_KERNEL_ID = ( @2021-12-07/20:16:56.16 ) SCLK_DATA_TYPE_144 = ( 1 ) SCLK01_TIME_SYSTEM_144 = ( 2 ) SCLK01_N_FIELDS_144 = ( 2 ) SCLK01_MODULI_144 = ( 4294967296 65536 ) SCLK01_OFFSETS_144 = ( 0 0 ) SCLK01_OUTPUT_DELIM_144 = ( 2 ) SCLK_PARTITION_START_144 = ( 0.0000000000000E+00 ) SCLK_PARTITION_END_144 = ( 2.8147497671065E+14 ) SCLK01_COEFFICIENTS_144 = ( 0.0000000000000E+00 -4.3135816000000E+04 1.0000000000000E+00 4.1595328593920E+13 6.3465120918400E+08 1.0932244527567E+00 4.1595332190766E+13 6.3465126918400E+08 1.0000015356014E+00 4.1600990560317E+13 6.3473760918400E+08 9.9992600034940E-01 4.1600994492768E+13 6.3473766918400E+08 1.0000014776230E+00 4.1609256839157E+13 6.3486374277100E+08 1.0001231027175E+00 4.1609260770833E+13 6.3486380277100E+08 1.0000015734251E+00 4.1609264499760E+13 6.3486385967000E+08 1.0000033060819E+00 4.1609268431907E+13 6.3486391967000E+08 1.0000015931360E+00 4.1615915580904E+13 6.3496534727600E+08 9.9999669393997E-01 4.1615919513077E+13 6.3496540727600E+08 1.0000015932248E+00 4.1632958970972E+13 6.3522540918400E+08 9.9968525941184E-01 4.1632962904370E+13 6.3522546918400E+08 1.0000015675611E+00 4.1644130292371E+13 6.3539587026900E+08 1.0000096639931E+00 4.1644134224493E+13 6.3539593026900E+08 1.0000015675943E+00 4.1655430055971E+13 6.3556829124900E+08 9.9998855603917E-01 4.1655433988176E+13 6.3556835124900E+08 1.0000015676120E+00 4.1689947481369E+13 6.3609498618700E+08 1.0005801703869E+00 4.1689951411249E+13 6.3609504618700E+08 1.0000016518560E+00 4.1691587383518E+13 6.3612000918400E+08 9.9998143548462E-01 4.1691591315751E+13 6.3612006918400E+08 1.0000016719859E+00 4.1702911985463E+13 6.3629280918400E+08 1.0000010172536E+00 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1.0000016628177E+00 4.2283006005862E+13 6.4514435634900E+08 1.0006894092839E+00 4.2283009935313E+13 6.4514441634900E+08 1.0000016927488E+00 4.2480077415476E+13 6.4815143255000E+08 9.9906373345495E-01 4.2480081351321E+13 6.4815149255000E+08 1.0000016479256E+00 4.2554793358327E+13 6.4929150918400E+08 9.9983218148809E-01 4.2554797291147E+13 6.4929156918400E+08 1.0000016335269E+00 4.2663478083854E+13 6.5094990918400E+08 1.0000116985418E+00 4.2663482015968E+13 6.5094996918400E+08 1.0000015866664E+00 4.2764938902509E+13 6.5249808087100E+08 1.0011615241682E+00 4.2764942830107E+13 6.5249814087100E+08 1.0000016506291E+00 4.2798963958389E+13 6.5301726294800E+08 9.9953177451359E-01 4.2798967892391E+13 6.5301732294800E+08 1.0000015635280E+00 4.2865916822190E+13 6.5403888414300E+08 1.0005226322140E+00 4.2865920752296E+13 6.5403894414300E+08 1.0000016128263E+00 4.3009039679357E+13 6.5622276918400E+08 9.9992828883427E-01 4.3009043611799E+13 6.5622282918400E+08 1.0000016136624E+00 4.3137682201372E+13 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4.5307349719267E+13 6.9129225618400E+08 1.0000016649617E+00 4.5316647230571E+13 6.9143412518400E+08 1.0000203454660E+00 4.5316651162651E+13 6.9143418518400E+08 1.0000016752282E+00 4.5344049817808E+13 6.9185225618400E+08 1.0000233973573E+00 4.5344053749876E+13 6.9185231618400E+08 1.0000016999313E+00 4.5364589708597E+13 6.9216567057900E+08 9.9997762094354E-01 4.5364593640845E+13 6.9216573057900E+08 1.0000016902850E+00 ) \begintext