Go to the bottom.

! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! SDDL Name: WIDCR_PARMS.SDDL ! ! Purpose: This SDDL file defines the widcr_parms relation. ! ! Modification History: ! ! Date PR Who Reason ! -------- ------- --- ------------------------------------------------- ! 11/15/94 27329 SSS Original implementation ! 01/31/96 28642 MRB Expand information on fields low_sky & moon_avd_ang ! 04/30/97 30900 MRB Need C/ output for C++ ! 07/21/97 29733 MRB Add fields for EPS merge ! 05/18/98 36046 MRB Add field for EPS merge for non-roll offsets ! 08/10/99 37231 BAO Scheduling FHST Updates Project ! 10/01/01 44572 sss Added index ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! LANGUAGE C, FORTRAN, SQL INCLUDE ZSPSS_USER_TYPES.SDDL RECORD WIDCRP_TYPE DESCRIPTION "This read-only relation is used to store various PDB based constants that are used throughout SPSS commands and the calendar scheduling process. These constants vary widely from earth avoidance parameters, on-board spacecraft timing data parameters, TDRS parameters, to scheduling specific parameters. These constants also apply to different PMDB entities. For example, a field may be used by an alignment, and observation set, or a scheduling unit. Since this table is read-only, there have been mechanisms provided to allow you to override the fields. If you override the field this may prohibit an SMS from being sent to PASS, BUT, you can still do it. There are several mechanisms for this: 1) qsoverrides relation 2) qboverrides relation 3) qalignment relation 4) SPSS CALENDAR/MODPARMS command Each field is highlighted below with its override mechanism (if it exists). " FIELD dark_er_angl TYPE R4 UNITS "DEGREES" DESCRIPTION "A target will be considered occulted by the dark earth limb if the ST line-of-sight to the target is within this angle of the dark earth limb." RELATED_FIELDS "qalignment.dark_er_occ" END_FIELD FIELD brit_er_angl TYPE R4 UNITS "DEGREES" DESCRIPTION "A target will be considered occulted by the bright earth limb if the ST line-of-sight to the target is within this angle of the bright earth limb." RELATED_FIELDS "qalignment.brit_er_occ" END_FIELD FIELD sun_avoi_ang TYPE R4 UNITS "DEGREES" DESCRIPTION "This field contains the avoidance angle from the center of the sun (assuming aperture door open). It corresponds to angv1sun (1) in ST PDB constraint/restriction parameters file. This value can change per observation set." RELATED_FIELDS "qboverrides.sun_avoid" END_FIELD FIELD mon_avoi_ang TYPE R4 UNITS "DEGREES" DESCRIPTION "This field contains the avoidance angle from the center of the moon. SPSS needs to know the moon avoidance angle for an obset so it can compute its moon avoidance windows during obset-level PMDB/UPDATE. SPSS uses QBOverrides data if it exists. If not, take the maximum QAlignment moon_avd_ang value (in degrees) over all alignments in the obset, assuming it is a positive number (0 is equivalent to `unspecified'). If there is no alignment for which moon_avd_ang was populated with a nonzero value, then fall back on the WIDCR_Parms default. Note that this is suboptimal in the case where an obset contains some LOW-SKY and some non-LOW-SKY alignments, since the LOW-SKY moon avoidance angle will be applied to the entire obset even though it is only needed for part of it. A more accurate approach would move the moon avoidance window processing down to the alignment level, but this would be a major project in SPSS and is not warranted just to optimize LOW-SKY. However, the moon avoidance field is still being defined at the alignment level to preserve the option of doing thisat some later time. There was some discussion on whether Trans should populate moon_avd_ang for all alignments or just the LOW-SKY alignments. Doing the latter would preserve our freedom to change WIDCR_Parms without also changing Trans, but the former approach is more consistent with the way earth avoidance angles are handled and makes for a cleaner interface in my opinion (the data is always coming from Trans, not from Trans some of the time and SPSS defaults at other times). " RELATED_FIELDS "qboverrides.moon_avoid" "qalignment.moon_avd_ang" END_FIELD FIELD max_dev TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the maximum allowed deviation from nominal roll when ST is in sunlight. It corresponds to rolldev2 in ST PDB constraint/restriction parameters file." RELATED_FIELDS "qboverrides.max_deviat" END_FIELD FIELD fgs_brit TYPE R4 UNITS "DEGREES" DESCRIPTION "The line-of-sight of the FGS must not be smaller than this angle (in this field) from the bright earth limb for guide star acquisition." RELATED_FIELDS "qboverrides.fgs_bright" END_FIELD FIELD fgs_dark TYPE R4 UNITS "DEGREES" DESCRIPTION "The line-of-sight of the FGS must not be smaller than this angle (in this field) from the dark earth limb for guide star acquisition." RELATED_FIELDS "qboverrides.fgs_dark" END_FIELD FIELD fhst_brit TYPE R4 UNITS "DEGREES" DESCRIPTION "The line-of-sight of the FHST in operation must not be within this angle (in this field) of the bright earth limb." RELATED_FIELDS "qboverrides.fhst_bright" END_FIELD FIELD fhst_dark TYPE R4 UNITS "DEGREES" DESCRIPTION "The line-of-sight of the FHST in operation must not be within this angle (in this field) of the dark earth limb." RELATED_FIELDS "qboverrides.fhst_dark" END_FIELD FIELD check_saa TYPE YES_NO_FLAG_TYPE DESCRIPTION "When this field is 'Y' SAA constraints are checked when processing the scheduling unit and its components." RELATED_FIELDS "qsoverrides.saa" END_FIELD FIELD check_roll TYPE YES_NO_FLAG_TYPE DESCRIPTION "When this field is 'Y' roll angle constraints are checked when processing the scheduling unit and its components." RELATED_FIELDS "qsoverrides.roll_angle" END_FIELD FIELD check_datavl TYPE YES_NO_FLAG_TYPE DESCRIPTION "When this field is 'Y' data volume constraints are checked during scheduling and other processing." RELATED_FIELDS "qsoverrides.data_volume" END_FIELD FIELD check_tapevl TYPE YES_NO_FLAG_TYPE DESCRIPTION "When this field is 'Y' tape volume constraints are checked during scheduling and other processing." RELATED_FIELDS "qsoverrides.tape_data_vl" END_FIELD FIELD check_rfi TYPE YES_NO_FLAG_TYPE DESCRIPTION "When this field is 'Y' RFI constraints are checked during scheduling and other processing." RELATED_FIELDS "qsoverrides.rfi_zone" END_FIELD FIELD check_duty TYPE YES_NO_FLAG_TYPE DESCRIPTION "When this field is 'Y' ST transmission duty cycles are checked. " RELATED_FIELDS "qsoverrides.duty_cycle" END_FIELD FIELD fhst_mn_angl TYPE R4 UNITS "DEGREES" DESCRIPTION "This field holds the minimum FHST angle to the center of the moon. This value can change only on an entire C&C List basis." END_FIELD FIELD fhst_sn_angl TYPE R4 UNITS "DEGREES" DESCRIPTION "This field holds the minimum FHST angle from the center of the sun. It corresponds to: max (fhstsun (i), i=1-3) in the ST PDB constraint/restriction parameters file. This value can change only on an entire C&C List basis." END_FIELD FIELD tdrs_swi_tim TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the time required to switch between TDRS vehicles. This value can change only on an entire C&C List basis." END_FIELD FIELD tdrs_ovr_tim TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the time required for TDRS link overlap. This value can change only on an entire C&C List basis." END_FIELD FIELD rev_data_vol TYPE R4 UNITS "KILOBITS" DESCRIPTION "This field is the the maximum allowed data volume for 1 revolution (orbit). This is a ground resource threshold/limitation. This value can change only on an entire C&C List basis." END_FIELD FIELD day_data_vol TYPE R4 UNITS "KILOBITS" DESCRIPTION "This field is the maximum allowed data volume for one day. This is a ground resource threshold/limitation. This value can change only on an entire C&C List basis." END_FIELD FIELD tap_data_vol TYPE R4 UNITS "KILOBITS" DESCRIPTION "This field is the the maximum allowed tape volume for 1 revolution (orbit). It applies to only those alignments that use the tape recorders. This value can change only on an entire C&C List basis." END_FIELD FIELD mar_duty_cy TYPE R4 UNITS "PERCENT" DESCRIPTION "This field holds the duty cycle for MA (multi-access) return link usage. This value can change only on an entire C&C List basis." END_FIELD FIELD ssar_duty_cy TYPE R4 UNITS "PERCENT" DESCRIPTION "This field holds the duty cycle for SSA (single- service-access) return link usage. This value can change only on an entire C&C List basis." END_FIELD FIELD ma_sun_angl TYPE R4 UNITS "DEGREES" DESCRIPTION "This is the minimum angle from TDRS MA boresight to center of sun for MA return link. It is the secondary parameter computed as maximum of: tdrssun(1,1) and tdrssun(2,1) in ST PDB constraint/restriction parameters file." END_FIELD FIELD cos_ma_sun TYPE R4 DESCRIPTION "This is the cosine secondary parameter computed as: cos (widcr_parms.ma_sun_angl)." END_FIELD FIELD ssa_sun_angl TYPE R4 UNITS "DEGREES" DESCRIPTION "This is the minimum angle from TDRS SSA boresight to center of sun for SSA return link. It is the secondary parameter computed as maximum of: tdrssun(1,2) and tdrssun(2,2) in ST PDB constraint/restriction parameters file." END_FIELD FIELD cos_ssa_sun TYPE R4 DESCRIPTION "This is the cosine secondary parameter computed as: cos (widcr_parms.ssa_sun_angl)." END_FIELD FIELD ma_er_angl TYPE R4 UNITS "DEGREES" DESCRIPTION "This is the minimum angle from TDRS MA boresight to earth limb for MA forward link." END_FIELD FIELD ssa_er_angl TYPE R4 UNITS "DEGREES" DESCRIPTION "This is the minimum angle from TDRS SSA boresight to earth limb for SSA forward link." END_FIELD FIELD mar_hg_angl TYPE R4 UNITS "DEGREES" DESCRIPTION "This is the minimum angle from ST HGA boresight to earth limb for MA return link. It corresponds to angirac (1) in the ST PDB constraint/restriction parameters file." END_FIELD FIELD ssar_hg_angl TYPE R4 UNITS "DEGREES" DESCRIPTION "This is the minimum angle from ST HGA boresight to earth limb for SSA return link. It corresponds to angirac (2) in the ST PDB constraint/restriction parameters file." END_FIELD FIELD ma_gr_angl TYPE R4 UNITS "DEGREES" DESCRIPTION "This is the minimum angle from center of sun to boresight of ground antenna supporting that TDRS for MA return link. It corresponds to grndsun (1) in ST PDB constraint/restriction parameters file." END_FIELD FIELD cos_ma_gr TYPE R4 DESCRIPTION "This is the cosine secondary parameter computed as: cos (widcr_parms.ma_gr_angl)." END_FIELD FIELD ssa_gr_angl TYPE R4 UNITS "DEGREES" DESCRIPTION "This is the minimum angle from center of sun to boresight of ground antenna supporting that TDRS for SSA return link. It corresponds to grndsun (2) in the ST PDB constraint/restriction parameters file." END_FIELD FIELD cos_ssa_gr TYPE R4 DESCRIPTION "This is the cosine secondary parameter computed as: cos (widcr_parms.ssa_gr_angl)." END_FIELD FIELD norm_dev TYPE R4 UNITS "DEGREES" DESCRIPTION "This is the normal allowed deviation from nominal roll. It corresponds to rolldev1 in ST PDB constraint/ restriction parameters file." END_FIELD FIELD st_axis TYPE R8 UNITS "KILOMETERS" DESCRIPTION "This field is the magnitude (length) of th HST orbital semi-major axis." END_FIELD FIELD shad_dev TYPE R4 UNITS "DEGREES" DESCRIPTION "This is the maximum allowed deviation (+/-) from nominal roll when the ST line of sight is within the shadow restriction angle of the sun." RELATED_FIELDS "qboverrides.sh_dev" END_FIELD FIELD sh_restrict TYPE R4 UNITS "DEGREES" DESCRIPTION "The aperture door shadow constraint is imposed when ST line of sight is within this shadow restriction angle of the sun." RELATED_FIELDS "qboverrides.sh_restrict" END_FIELD FIELD anti_sun_ang TYPE R4 UNITS "DEGREES" DESCRIPTION "When the ST line of sight is within this anti-sun angle of the anti-solar point all roll restrictions are ignored." RELATED_FIELDS "qboverrides.anti_sun" END_FIELD FIELD rgascale TYPE R4 DESCRIPTION "This field is the RGA scale factor error coefficient. This error is due to the error in the slew rate, and appears as an error along the path of the slew." END_FIELD FIELD rgaalign TYPE R4 DESCRIPTION "This field is the RGA axes alignment error coefficient. This error is due to the error between the RGA input axes and the ST vehicle axes (also called gyro-cross coupling)." END_FIELD FIELD rgabias TYPE R4 DESCRIPTION "This field is the RGA bias drift error coefficient. This error is due to the error in predicting gyro drift, and increases linearly with time from the last attitude update." END_FIELD FIELD rollerr1 TYPE R4 DESCRIPTION "This field is the roll error coefficient (1-FHST). This error is due to the roll (v1) component of the attitude error following a 1-FHST roll update or an FHST full update." END_FIELD FIELD rollerr2 TYPE R4 DESCRIPTION "This field is the roll error coefficient (2-FHST). This error is due to the roll (v1) component of the attitude error following a 2-FHST roll update." END_FIELD FIELD pitchyaw TYPE R4 DESCRIPTION "This field is the pitch/yaw error coefficient (FHST). This error is due to the pitch/yaw (v2/v3) component of the attitude error following an FHST full update." END_FIELD FIELD dpmax TYPE I4 UNITS "SECONDS" DESCRIPTION "If the PCS mode of the previous obset is gyro, and an FHST update is scheduled after the last slew to the previous obset, the time of last pitch/yaw attitude update is set to the end of the FHST activity. Otherwise, this time is set to the initial time offset in this field." END_FIELD FIELD drmax TYPE I4 UNITS "SECONDS" DESCRIPTION "If the PCS mode of the previous obset is FGS/gyro or gyro, and an FHST update is scheduled after the last slew to the previous obset, the time of the last roll attitude update is set to the end of the FHST activity. Otherwise, this time is set to the initial time offset in this field." END_FIELD FIELD fhstthr1 TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the slew angle threshold for FHST updates. If the slew angle > fhstthr1 then schedule an FHST update for the slew. An FHST roll update will be scheduled before the slew, or an FHST full update will be scheduled after the slew, as required for scheduling efficiency." RELATED_FIELDS "qboverrides.fhstthr1" END_FIELD FIELD fhstthr2 TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the position uncertainty threshold for FHST updates. If the position uncertainty > fhstthr2, then schedule an FHST update for the slew if it will improve scheduling efficiency. A 1-FHST or 2-FHST roll update or an FHST full update, may be scheduled before the slew, or an FHST full update may be scheduled after the slew. It is possible that no FHST update will be scheduled for the slew if it does not improve scheduling efficiency." RELATED_FIELDS "qboverrides.fhstthr2" END_FIELD FIELD fhstthr3 TYPE R4 UNITS "DEGREES" DESCRIPTION "If the position uncertainty (PU) > fhstthr3, then FHST updates must be scheduled to reduce the PU below fhstthr3. A 1-FHST or 2-FHST roll update, or a full update will be scheduled before the slew, or a full update will be scheduled after the slew, as required for scheduling efficiency and to reduce PU below fhstthr3. If no FHST will reduce PU below fhstthr3, then a full update will be scheduled after the slew." RELATED_FIELDS "qboverrides.fhstthr3" END_FIELD FIELD fhstdur1 TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the duration of an FHST roll update. It requires fhst visibility by one or two FHSTs. The two FHSTs are used simultaneously, so the duration of the FHST udpate is the same." RELATED_FIELDS "qboverrides.fhstdur1" END_FIELD FIELD fhstdur2 TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the duration of an FHST full update. It requires fhst visibility by two FHSTs. " RELATED_FIELDS "qboverrides.fhstdur2" END_FIELD FIELD fhstdurm TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the duration of the maneuver following a maneuver mode FHST; it does not require FHST visibility and is scheduled immediately after the FHST update. The mode of FHST update scheduled before a slew will be delayed mode; the mode of FHST update scheduled after a slew will be maneuver mode." RELATED_FIELDS "qboverrides.fhstdurm" END_FIELD FIELD fhstdel1 TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the delta time threshold between start of FHST update and start of slew. An FHST update before the slew must be scheduled within fhstdel1 of the start of slew. This field applies to both 1-FHST and 2-FHST roll updates, and to FHST full updates." RELATED_FIELDS "qboverrides.fhstdel1" END_FIELD FIELD fhstdel2 TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the delta time threshold between start of FHST update after the slew and start of PCS acquisition activity. The FHST update and/or PCS acquisition activity will be scheduled such that the difference between the start of the FHST update and the start of the PCS acquisition activity is less than fhstdel2." RELATED_FIELDS "qboverrides.fhstdel2" END_FIELD FIELD fhstdel3 TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the delta time threshold for FHST update scheduling and is used to evaluate FHST update scenarios for scheduling efficiency." RELATED_FIELDS "qboverrides.fhstdel3" END_FIELD FIELD fhstdela TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the minimum allowed FHST angle to the dark earth limb." RELATED_FIELDS "qboverrides.fhst_dark" END_FIELD FIELD fhstbela TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the minimum allowed FHST angle to the bright earth limb." RELATED_FIELDS "qboverrides.fhst_bright" END_FIELD FIELD max_si_power TYPE I2 UNITS "WATTS" DESCRIPTION "This field is the total ST power allocated for Science Instrument usage." END_FIELD FIELD hga1_minangx TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the minimum x-gimbal angle for HGA-1." END_FIELD FIELD hga1_minangy TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the minimum y-gimbal angle for HGA-1." END_FIELD FIELD hga1_maxangx TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the maximum x-gimbal angle for HGA-1." END_FIELD FIELD hga1_maxangy TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the maximum y-gimbal angle for HGA-1." END_FIELD FIELD hga2_minangx TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the minimum x-gimbal angle for HGA-2." END_FIELD FIELD hga2_minangy TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the minimum y-gimbal angle for HGA-2." END_FIELD FIELD hga2_maxangx TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the maximum x-gimbal angle for HGA-2." END_FIELD FIELD hga2_maxangy TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the maximum y-gimbal angle for HGA-2." END_FIELD FIELD hga1_maxrtx TYPE R4 UNITS "DEGREES/MINUTE" DESCRIPTION "This field is the maximum x-gimbal maneuver rate for HGA-1." END_FIELD FIELD hga1_maxrty TYPE R4 UNITS "DEGREES/MINUTE" DESCRIPTION "This field is the maximum y-gimbal maneuver rate for HGA-1." END_FIELD FIELD hga2_maxrtx TYPE R4 UNITS "DEGREES/MINUTE" DESCRIPTION "This field is the maximum x-gimbal maneuver rate for HGA-2." END_FIELD FIELD hga2_maxrty TYPE R4 UNITS "DEGREES/MINUTE" DESCRIPTION "This field is the maximum y-gimbal maneuver rate for HGA-2." END_FIELD FIELD hga_pad_time TYPE I4 UNITS "SECONDS" DESCRIPTION "Thie field is the HGA pad time to account for tracking start and stop times and minimum command separation time." END_FIELD FIELD tdrs_pad_beg TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the TDRS visibility pad time to be added to the start of the visibility interval." END_FIELD FIELD tdrs_pad_end TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the TDRS visibility pad time to be added to the end of the visibility interval." END_FIELD FIELD mjr_slw_size TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the size of a major slew (taken from CCR 2079 DF-224 Flight Software limitations)." END_FIELD FIELD mjr_slw_sep TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the size of a major slew separation (taken from CCR 2079 DF-224 Flight Software limitations)." RELATED_FIELDS "qsoverrides.mjr_slw_sep" END_FIELD FIELD norm_inc TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the allowable solar array incidence angle for normal roll windows." END_FIELD FIELD max_inc TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the allowable solar array incidence angle for off-normal roll windows." RELATED_FIELDS "qboverrides.max_inc" END_FIELD FIELD pdb_tape_id TYPE PDB_ID_TYPE END_FIELD FIELD nom_slew_sep TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the minimum amount of time that must separate the slew to nominal roll orientation and the successive slew. The separation is measured from start of slew to start of slew." END_FIELD FIELD max_off_norm TYPE R4 DESCRIPTION "This field is the maximum allowable fraction of the total calendar time spent in off normal roll orientation." END_FIELD FIELD min_norm TYPE R4 DESCRIPTION "This field is the minimum fraction of the total calendar time spent in normal roll orientation necessary for a healthy calendar." END_FIELD FIELD fgs_pse1_dur TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the duration for the pause FGS control calendar activity." END_FIELD FIELD drift_rate1 TYPE R4 DESCRIPTION "This field is the drift rate after pause FGS control activity. It is a non-zeroed integral term." END_FIELD FIELD drift_rate2 TYPE R4 DESCRIPTION "This field is the drift rate after guide star handoff activity. It is a short term non-zeroed integral term." END_FIELD FIELD asun_avdang TYPE R4 UNITS "DEGREES" DESCRIPTION "This field is the anti-sun avoidance angle (measured from vector to the antisun). The ST line-of-sight will not be pointed within the cone defined by this angle about the anti-sun vector." RELATED_FIELDS "qboverrides.asun_avoid" END_FIELD FIELD fgs_pse2_fgs TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the duration of the guide star handoff acquisition activity under FGS control. It specifies the duration at the end of the GS handoff acquisition activity during which the vehicle is under FGS control." END_FIELD FIELD fgs_pse2_dur TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the duration for the guide star handoff pause FGS control calendar activity." END_FIELD FIELD pcpocc_max TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the the maximum duration of the pcpocult group (including time to maneuver the FGSs to 'default')." END_FIELD FIELD maxdiff_wnd TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the the maximum difference between the PASS and SPSS computed visibility windows." END_FIELD FIELD orb1actlate TYPE YES_NO_FLAG_TYPE DESCRIPTION "When this field is 'N' then late scheduling will not be permitted for this scheduling unit. Late scheduling is the process of shifting an SU's activities down in time such that the end time of the SU does not change but the start time gets later, thus the SU is more compact and uses less wall-clock time. When this field is 'Y' the scheduling software will permit late scheduling to occur." RELATED_FIELDS "qsoverrides.orb1actlate" END_FIELD ! 29733 - SMSG EPS MERGE Parameters - SCIOPSDB PR 32092 FIELD min_sa_angle TYPE R8 UNITS "DEGREES" DESCRIPTION "This is the minimum angle from V1 to SA normal." END_FIELD FIELD max_sa_angle TYPE R8 UNITS "DEGREES" DESCRIPTION "This is the maximum angle from V1 to SA normal." END_FIELD FIELD max_rec_inc_ang TYPE R8 UNITS "DEGREES" DESCRIPTION "This is the maximum SA incidence angle during a recovery period." END_FIELD FIELD max_unr_inc_ang TYPE R8 UNITS "DEGREES" DESCRIPTION "This is the maximum unrestricted (that is, without requiring a recovery period) SA incidence angle." END_FIELD FIELD max_abs_inc_ang TYPE R8 UNITS "DEGREES" DESCRIPTION "This is the absolute maximum solar array incidence angle." END_FIELD FIELD max_offnm_dur TYPE R8 UNITS "ORBITS" DESCRIPTION "This is the maximum number of orbits with an off-normal (greater than maximum restricted) solar array incidence angle." END_FIELD FIELD min_rec_dur TYPE R8 UNITS "ORBITS" DESCRIPTION "This is the miminum number of orbits during a recovery period after an off-normal period." END_FIELD FIELD min_sa_slew_ang TYPE R8 UNITS "DEGREES" DESCRIPTION "This is the minimum solar array slew angle." END_FIELD FIELD min_sa_slew_dur TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the duration for the minimum solar array slew." END_FIELD FIELD max_sa_slewlim_inc_ang TYPE R8 UNITS "DEGREES" DESCRIPTION "This is the largest sun-to-SA-normal angle that can be applied by the SA slew minimization software. If the optimal sun-to-SA-normal angle at a vehicle attitude is larger than this value (due to large off-nominal roll), then the solar arrays will be positioned at the optimal value for that vehicle slew. If the optimal sun-to-SA-normal angle is less than this largest value, then the solar arrays may be positioned to permit the largest value during SA slew minimization." END_FIELD FIELD use_fhst1 TYPE YES_NO_FLAG_TYPE DESCRIPTION "This flag specifies whether the FHST Reference Star System (FRSS) can use FHST 1 in its search for available reference stars. The value 'Y' means FHST 1 is usable. 'N' means it is not." END_FIELD FIELD use_fhst2 TYPE YES_NO_FLAG_TYPE DESCRIPTION "This flag specifies whether the FRSS can use FHST 2 in its search for reference stars. The value 'Y' means FHST 2 is usable. 'N' means it is not." END_FIELD FIELD use_fhst3 TYPE YES_NO_FLAG_TYPE DESCRIPTION "This flag specifies whether the FRSS can use FHST 3 in its search for reference stars. The value 'Y' means FHST 3 is usable. 'N' means it is not." END_FIELD FIELD roll_step_size TYPE R8 UNITS "DEGREES" DESCRIPTION "This field is the roll step size for the calculation of FHST reference star availability." END_FIELD FIELD max_velaber_earth TYPE R8 UNITS "ARCSECONDS" DESCRIPTION "This field is the maximum velocity aberration correction due to Earth velocity." END_FIELD FIELD max_velaber_st TYPE R8 UNITS "ARCSECONDS" DESCRIPTION "This field is the maximum velocity aberration correction due to HST velocity." END_FIELD FIELD pos_uncer_mm_updates TYPE R8 UNITS "ARCSECONDS" DESCRIPTION "This field is the position uncertainty (horizontal and vertical) for FHST reference star availability for Maneuver Mode Updates. It accounts for the maximum position uncertainty following a slew and the relative FHST position uncertainty." END_FIELD FIELD max_time_reduction TYPE I4 UNITS "SECONDS" DESCRIPTION "This field is the maximum total time reduction used by the FRSS when intersecting roll windows." END_FIELD END_RECORD RELATION widcr_parms TYPE WIDCRP_TYPE DESCRIPTION "PDB Default Scheduling Parameters Relation" SUBSYSTEM_USING "SPSS", "IM", "CCLIST", "SCIOPSDB" INDEX widcr_parms_1 TYPE clustered FIELDS brit_er_angl END_INDEX END_RELATION INSTANCE widcr_parms GLOBAL TYPE WIDCRP_TYPE END_INSTANCE

Go to the top.