ExoMars2016 SPICE Kernel Dataset Release Notes v4.0.0 =========================================================================== This release notes file describes the status of the mission's SPICE Kernel Dataset for the given version. This version (4.0.0) provides a tag in the ExoMars2016 Git repository at the SOCCI Bitbucket: https://repos.cosmos.esa.int/socci/projects/SPICE_KERNELS/ Created by Marc Costa Sitja, ESAC/ESA, February 19, 2019. Contact Information -------------------------------------------------------- If you have any questions regarding this file, please contact SPICE support at ESAC: Marc Costa Sitja (+34) 91-8131-457 mcosta@sciops.esa.int, esa_spice@sciops.esa.int Notes -------------------------------------------------------- February 19, 2019 v4.0.0 Re-generated all Measured Attitude CK files to implement an improved filtering of coarse quaternions (developed by B.Geiger and M.Costa). Please note that this filter is not final nor perfect. There are still some coarse quaternions which cannot be filtered out without affecting the coverage of the CK files and losing important measured attitude information. Re-generated all Solar Array CKs following an error in the SA rotation axis. The HGA CKs have also been re-generated to match the coverage with the rest of CKs. After this release the generation of CKs from Telemetry (SC, HGA, SA) will be 'aggregated' and the CKs coverage will be incremented instead of having weekly files. Added readme file in BitBucket SKD. Issues fixed for this release -------------------------------------------------------- [SPICEPCR-98] - The Measured CK Filter for EM16 is not working properly [SPICEPCR-210] - Planning CK generation issue [SPICEPCR-217] - EM16 PLAN LTP files in meta-kernel not present in SKD. [SPICEPCR-219] - TGO Solar Array Orientation files with wrong axis as reported by Aerobraking WG Appendix: Release History =========================================================================== January 19, 2019 v3.3.1 Added SPK with a subset of an operational SPK to contain only science phase data in order to avoid reaching the SPK 100.000 segments buffer limit. The OPS meta-kernel will temporarily only include science phase data: em16_tgo_fsp_048_01_20160314_20181231_v01.bsp -. em16_tgo_fsp_048_01_20180227_20181111_v01.bsp <' Corrected some SPICE-Enhanced Cosmographia configuration files. January 4, 2019 v3.3.0 Added Digital Shape Kernels for Phobos, Deimos and a test Mars MOLA low resolution shape model. An additional FK including the surface definitions for the new DSKs has also been generated. Please note that for now (due to some ESS dependencies with Toolkit N065) those BDS files will not be included in the meta-kernels. The added files are: phobos_k137_dlr_v01.bds Contains Phobos shape data based on Mars-Express HRSC images. phobos_m001_gas_v01.bds Contains Phobos shape data by Robert Gaskell based on Viking Orbiter 1 VIS-A and VIS-B camera images. deimos_k002_tho_v01.bds Contains Deimos shape data by Peter Thomas based on Viking Orbiter images. mars_m129_mol_v01.bds Contains Mars shape data based on Mars Global Surveyor MOLA downsized to 1 pixel per degree data processed and generated by Nat Bachman. Cleaned-up EDM orientation files. Corrected typo in Star Tracker instrument kernel (pending re-definition). Done several updates in readme files. Included ESTRACK relevant files in the SKD. Added SPICE-Enhanced Cosmographia configuration files in the misc directory. June 18, 2018 v3.2.0 FK kernels: Updated NOMAD SO and UVIS Occultation Boresights. May 17, 2018 v3.1.0 General Items: This release features the inclusion of the position of different S/C elements as part of requests from the Mars Atmosphere and Gravity Science Exploitation Working Group. They consist of the position of the LGAs, different elements of the SA and the stowed position of the HGA Phase Center. SPK kernels: Added SPK for TGO Center of Gravity and SPK for TGO Structures: em16_tgo_cog_v00.bsp em16_tgo_struct_v00.bsp FK kernels: Updated CaSSIS rotations of CRU with respect to SC and FSA with respect to TEL. Added LGAs reference frames, corrected STR IDs and added Structures IDs. IK Kernels: Updated CaSSIS IK and STR IKs. April 5, 2018 v3.0.0 General Items: In order to accommodate the planning CK kernels in the operational meta-kernel and avoid having to use different SCLKs for different data it has been agreed to implement a strategy suggested by Boris Semenov (NAIF/JPL) which consists on the following: An additional S/C bus reference frame is defined in order to accommodate the C-kernels that have been generated with a fictional SCLK kernel. These CK kernels contain predicted data and are used for long and mid term planning. The before-mentioned CKs are generated with a fictional SCLK kernel due to the fact that successive updates of the real SCLK kernel will lead to erroneous results for the predicted data provided by those kernels after the last Time Correlation Packet that the real SCLK contains. The alternative of re-generating the planning CKs with the latest SCLK kernel is not considered. In order to be able to use the long and mid term planning CKs with the measured and short term planning CKs the planning CKs are generated with the fictional SCLK and are defined relative to the TGO spacecraft planning reference frame -- TGO_SPACECRAFT_PLAN --. Those planning CKs are then appended with a CK segment generated with the real SCLK that maps the TGO_SPACECRAFT_PLAN to the TGO_SPACECRAFT reference frame thus allowing to use both planning and measured CK files together with correct results. Note that when new SCLK are available the segment boundaries of the planning CKs will be affected. Due to this reason, the mapping segments boundaries are adjusted inwards by a minute on each side to get a better chance of them always being within the original CK segment boundaries. MK kernels: This release includes the generation of a planning meta-kernel. This kernel follows the same release strategy as the operational meta-kernel. Note that the planning meta-kernel is aimed for LTP, MTP and STP planning, whereas the operational meta-kernel is aimed for VSTP planning and Data Analysis. The planning meta-kernel is as follows: em16_plan.tm, and its corresponding tagged version; em16_plan_vXXX_YYYYMMDD_NNN.tm CK kernels: The CK kernels for Solar Arrays and High-Gain Antenna are now available for all the mission (cruise, pre-aerobraking, aerobraking and ''science''). The list of generated kernels is the following: em16_tgo_hga_scm_20160315_20161015_s20180215_v01.bc em16_tgo_hga_spm_20161016_20170314_s20180215_v01.bc em16_tgo_hga_sam_20170315_20180309_s20180215_v01.bc em16_tgo_hga_ssm_20180309_20180311_s20180215_v01.bc em16_tgo_sa_scm_20160315_20161015_s20180215_v01.bc em16_tgo_sa_spm_20161016_20170314_s20180215_v01.bc em16_tgo_sa_sam_20170315_20180309_s20180215_v01.bc em16_tgo_sa_ssm_20180309_20180311_s20180215_v01.bc These kernels are now generated in a regular basis along with the measured CK kernels on Tuesdays afternoons. They will also be included in the operational meta-kernel. FK kernels: Added Star Tracker reference frames and spacecraft reference frame for planning CKs. IK Kernels: Generated IK for Star Trackers. SCLK Kernels: Added new fictional SCLK for Planning CK files: January 24, 2018 v2.1.0 General items: - This Kernel Dataset Release (SKD) is a milestone for the ExoMars 2016 for it supports obtaining a subset of the SKD with Bit via Bitbucket. The SKD subset can also be obtained from a permanent link to a zipped file. - This kernel dataset starts using ADCSng v0.3.0, but the files that it supports for EM16 have not been generated yet. - All the aareadme.txt files for all the kernel directories and all the release notes have been updated. - From this version onwards Alexander Abbakumov takes over from Anton Ledkov for the SPICE support at IKI. His contact is: Alexander Abbakumov +7 (495) 333-40-13 aabbakumov@romance.iki.rssi.ru MK kernels: - MK include now a SPICE variable that indicates their extended versions. October 17, 2017 v2.0.0 General items: - This Kernel Dataset Release is a milestone for the ExoMars2016 ESA SPICE Service for the Auxiliary Data Conversion System (Next Generation) pipeline (ADCSng) will become operational with it. Due to this all the source data that has been provided by ESOC/Fdy for TGO has been processed resulting into: - Publication of ALL the TGO OEM and AEM files delivered by Flight Dynamics. - Publication of ALL the Measured Attitude CKs as generated from the Quaternions extracted from the Housekeeping Telemetry. This also implies that Aerobraking reconstructed and predicted trajectory and attitude data will be available in a periodical basis from this Dataset Release onwards. - A new SCLK kernel has been generated with the latest TCP data. SPK kernels: - Publication of all SPK kernels from OEM data for the cruise phase, pre-aerobraking and aerobraking respectively: em16_tgo_fcp_XXX_NN_YYYYMMDD_YYYYMMDD_v01.bsp em16_tgo_fpp_XXX_NN_YYYYMMDD_YYYYMMDD_v01.bsp em16_tgo_fap_XXX_NN_YYYYMMDD_YYYYMMDD_v01.bsp - SPK files will be published as soon as the input files are delivered by FDy. CK kernels: - Publication of all Predicted CK kernels from OEM data for the cruise phase and pre-aerobraking (there is no AEM delivery during aerobraking): em16_tgo_sc_fcp_XXX_NN_YYYYMMDD_YYYYMMDD_sYYYYMMDD_v01.bc em16_tgo_sc_fpp_XXX_NN_YYYYMMDD_YYYYMMDD_sYYYYMMDD_v01.bc - Publication of all Measured CK kernels from HK TM Quaternions. Until 2017-09-30 files cover a timespan of a month. From October files cover the timespan of a week: cruise: em16_tgo_sc_scm_20160315_20160331_s20171007_v01.bc em16_tgo_sc_scm_20160401_20160430_s20171007_v01.bc em16_tgo_sc_scm_20160501_20160531_s20171007_v01.bc em16_tgo_sc_scm_20160601_20160630_s20171007_v01.bc em16_tgo_sc_scm_20160701_20160731_s20171007_v01.bc em16_tgo_sc_scm_20160731_20160831_s20171007_v01.bc em16_tgo_sc_scm_20160831_20160930_s20171007_v01.bc em16_tgo_sc_scm_20161001_20161031_s20171007_v01.bc pre-aerobraking: em16_tgo_sc_spm_20161101_20161130_s20171007_v01.bc em16_tgo_sc_spm_20161201_20161231_s20171007_v01.bc em16_tgo_sc_spm_20170101_20170130_s20171007_v01.bc em16_tgo_sc_spm_20170201_20170228_s20171007_v01.bc aerobraking: em16_tgo_sc_sam_20170301_20170331_s20171007_v01.bc em16_tgo_sc_sam_20170401_20170430_s20171007_v01.bc em16_tgo_sc_sam_20170501_20170531_s20171007_v01.bc em16_tgo_sc_sam_20170601_20170630_s20171007_v01.bc em16_tgo_sc_sam_20170701_20170731_s20171007_v01.bc em16_tgo_sc_sam_20170801_20170831_s20171007_v01.bc em16_tgo_sc_sam_20170901_20170930_s20171007_v01.bc ---- From here onwards coverage is weekly ---- em16_tgo_sc_sam_20171001_20171008_s20171007_v01.bc - Measured CK files will be published on Tuesdays around 15:00h CEST containing the information of the previous week (Monday to Sunday). - Two kernels have been deprecated and moved to the misc/deprecated_kernels directory: em16_tgo_spm_20170305_20170309_s20170424_v01.bc em16_tgo_sc_scm_20160314_20160719_s20160414_v01.bc MK kernels: - MK have now a slightly modified format (Main Bodies coverage now not included). - MK include the Measured CKs for the aerobraking phase when there is no AEM information (not for cruise nor pre-aerobraking). Instrument kernels: CASSIS: Updated Instrument Kernel with Optical Distortion Model from USGS. July 28, 2017 v1.6.0 General items: - Implementation of MCO-2 results for the SPICE kernels. Frame kernel: - Implemented new reference frames for ACS. - Implemented boresight missalignments from MCO-2 for NOMAD and ACS. Instrument kernels: ACS: Corrected FOV parameters for TIRVIM and created FoV definitions for scanning mirror fixed positions. CASSIS: Added FoV names and performed minor decription data updates. FREND: Updated FoV reference angle and minor typos. January 31, 2017 v1.5.1 Corrected boresight definitions for CaSSIS. January 20, 2017 v1.5.0 Updated Planetary and Satellite (Phobos and Deimos) ephemeris from versions DE430 to DE432 and MAR085 to MAR097 since those are the ephemeris versions used by Flight Dynamics after receiving confirmation from Robert Guilanya. 'former_versions' directories removed from kernel type sub-directories as requested by CaSSIS and NOMAD in the ExoMars 2016 SWT#12. Modified the presentation of Meta-kernels. January 10, 2017 v1.4.0 In order to facilitate a more one-to-one correspondance with SPICE Archives, following the advice from NAIF and in order to improve and make the meta-kernel management easier: earlier versions of files which have or have not been included in a meta-kernel will NOT be moved to the former_versions directory in the FTP as they used to. Instead all files will be kept in the directory and file management will be done solely via the meta-kernel. The former_versions directory will be kept to put files in there which have suffered file name change and which are also present in the kernel directory. This change is applied retroactively. This does not apply to the meta-kernel directory. The meta-kernel management has also been updated by removing the kernel specific to a dataset release for it creates confusion. Small update in TGO FK. October 19, 2016 v1.3.0 The meta-kernel publication strategy as been slightly modified. The meta-kernels that were published in the following directory: ftp://spiftp.esac.esa.int/data/SPICE/ExoMars2016/misc/ops_mk/ are now published directly on ftp://spiftp.esac.esa.int/data/SPICE/ExoMars2016/kernels/mk/ and its format has been slightly changed as specified in the readme file present in that An unexpected EDM EDL trajectory has been added for EDM support. September 28, 2016 v1.2.1 This release has been motivated by all the feedback and corrections that the instrument teams and the EDM personnel have provided to the ESA SPICE Service during the ExoMars 2016 Science Working Team Meeting #11. The NOMAD Flip Mirror CK kernel has been updated such that its commentaries reflect the renamed TGO_NOMAD_LNO_SCAN frame to TGO_NOMAD_LNO_FMM. The NOMAD CK file has been renamed by excluding the reference to 'scp' since there is only one CK based frame there is no need to indicate the component in the filename. A defalult CK file for NOMAD has been created in order to be able to use the TGO_NOMAD_LNO FOV definition. The FREND FoV definitions have been simplified. A default CK file for ACS has been created in order to be able to use the TGO_ACS_TIRVIM FoV definition. The ACS FOV parameters have been corrected as well. The EDM frames kernel has been updated by adding the reference frames that will be used by AMELIA for attitude propagation and reconstruction. The DECA Camera frame has been added and the corresponding IK file has been created. Two CK files have been generated for the EDM mission timeline. The ExoMars 2016 directory in the SPICE FTP has been renamed from 'EM16' to 'ExoMars2016' following an agreement by the SPICE User Group (Mission names aligned with the ones used by the Planetary Science Archive). September 9, 2016 v1.1.1 B.Geiger spotted a mistake in the SCLK filename: em16_tgo_step_20160907.tsc; the date at the end of the filename was the SCLK creation date and not the UTC date of the last TCP. This has been corrected along with the corresponding CK. Taking advantage of this a new strategy for the meta-kernels has been put in place which includes switching to a three version digit to make them correspond with the SPICE dataset release and an additional one version-independent (which will be versioned anyway under the SPICE_EM16 Git repository), which will be updated after every run of the SPICE operational pipeline such that there is a reference to the most up-to-date kernels. The format of this Release Notes file has also been updated. September 8, 2016 v1.1.0 Corrected minor typos and text description in ACS IK. Corrected cross angle values for CaSSIS Filters' (TGO_CASSIS_*) FoVs since they were full angle instead of half angle. Corrected minor text typos in CaSSIS IK. Added meta-kernel for the WGC instance of ExoMars 2016. August 19, 2016 v1.0.0 First release of the ExoMars 2016 Operational Kernel dataset. The dataset includes the initial draft version of the kernels by ODC Space which includes the support that was provided to the ExoMars 2016 SGS during the NEC phase. This release also includes the support that was provided by the SPICE service during the MCC phase including the manual generation of SP- and C-kernels and the initial instrument missaligment provided by NOMAD and ACS. A review and validation of the kernels provided by ODC Space was also performed by Alejandro Cardesin, Bernhard Geiger and Marc Costa Sitja. The outcome of this review is the following: 1- EM16 TGO frames kernel (em16_tgo_v07.tf) 1.1- ACS MIR frame definition to be checked (Anton L.?) 1.2- CaSSIS boresight -80.11 rotation updated from -80.02 Could this be the cause of the observed missalignment? 1.4- TGO_NOMAD_LNO_SCAN is a flip mirror. Should the CK dependency be removed? A CK has already been created by ODC Space but it is questionable whether if it is required or not. 2- NOMAD instrument kernel (em16_nomad_v02.tf) 3.1- As in the TGO FK. Should the CK dependency be removed? 4- FREND instrument kernel (em16_frend_v02_draft.tf) 4.1- There are three FOV defined which are replicas of each other. The only difference is their origin and it is not modeled in the current implementation nor is expected to be included. Shall TGO_FREND_HE and TGO_FREND_SC be removed? Finally a first version of the EDM frames kernels and SPK files have been generated for this version. End of text file.