BUILDING THE NEW CYCLE LRP

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BUILDING THE NEW CYCLE LRP

.Visit and Proposal List Compilation and Categorization

The categorized lists of Proposals/Visits is generated and each visit tagged with a number representing:

• how tight the constraints are,

• how difficult it would potentially be to schedule on a calendar,

• likelihood of conflicting with other visits.

The lists contained within that tool are (successive exclusion, in the order which the visits are identified):

1. Integrated CWs < 1 week

2. After-Bys w/ Infinite Tolerances.

3. After-By Tolerance < 1 week

4. Group & Sequence Within w/ Tolerance < 1 week

5. CVZs

6. After-By Tolerance < 1 month

7. Group & Sequence Within w/ Tolerance < 1 month

8. Integrated CWs < 1 month

9. Remaining Linksets

10. Large MAMA Visits

11. Remaining Large Orbit Visits

12. Remaining MAMAs

13. SAA Hiders

14. All Short Alignments

15. Medium Sized Alignments, partial SAA schedulers

16. Remainder

Level 1

Level 7

Level 2

Level 2

Level 3

Level 4

Level 5

Level 6

Level 7

Level 8

Level 9

Level 10

Level 13

Level 14

Level 12

Level 11

Layering Notes

Note the order of categorization does not match the sequence in which they were generated.

This was necessitated by several different requirements and operational workarounds.

Level 7 was done < Level 2 because of the of the visit_special_reuirements table--

SQL query for Level 2 crashes because of ":infinity" in one a fields where SQL expects an integer.

Levels 13-11 are done in reverse order because after the step in which MAMAs are categorized, it is desired to catch all SAA-hiders prior to categorizing other remaining visits. SAA hiders are the final visits which should be laid down by SPIKE.

Level 14 identified < Level 12 because it’s simpler to catch visits with the shortest alignments.

Actual planning sequence proceeded using Level as the sequence because it yielded a layering of the most restrictive visits planned first, with less and less restrictive categories layered on top.

Statistics on Visits and the Levels in the Cycle 9 LRP

Category or Type of Visits

Integrated CWs < 1 week.

AfterBys & G/S w/in with Tolerances < 1 week.

CVZs.

G/S w/in with tolerance < 1 month.

Integrated CWs < 1 month.

AfterBys with infinite tolerance & other linksets.

Large MAMAs.

Remaining large orbit visits.

Remaining MAMAs

Remainder.

>= 0.5 of visit has <= 26 minute alignments.

SAA-hiders.

All orbits have short alignments.

11

12

13

14

8

9

10

Level

1

2

3

5

6

7

49

31

221

38

15

277

8

#Visits #Orbits

133 263

198

34

269

88

37

143

85

60

382

208

224

163

360

73

30

454

8

Process Flow for Building a Cycle LRP

Compile List of Visits

Classify (Layer) according to Restrictions

Build SPIKE Script to implement Layers

Run SPIKE on the “Build LRP” + Next Layer

Evaluate Output

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