AGI Technology Beyond Earth Orbit

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LTD in Chains• Chains models multi-hop Access–A à B à C à D etc.• Only approximately LTD compliant–Doesn’t apply a consistent clock base–We invalidate the Chain if the LTD of any hop but thelast is too “large”• Customer support à if you need LTD compliance–HTML Tool can help<strong>AGI</strong>Pg 36 of 40www.agi.com
Interplanetary Propagation (Berry)• Choice of origin–Switching cb’s–Use appropriate 3 rd bodies–Include proper ‘indirect’ terms• Matching JPL (Apophis)–Sun-centered–Use all 3 rd bodies–General relativity–Account for TDT / TDB differences<strong>AGI</strong>Pg 37 of 40www.agi.com
Page 1 and 2: AGIAGI TechnologyBeyond Earth Orbit
Page 3 and 4: Introduction (Woodburn)• Welcome
Page 5 and 6: Current/Historical Missions (Hall)
Page 7 and 8: Recent enhancements to Astrogator(B
Page 9 and 10: Orbit determination (Woodburn)• C
Page 11 and 12: Sequential range• Ambiguous two w
Page 13 and 14: Trk-34 tracking data format• Very
Page 15 and 16: Lunar gravity process noise model
Page 17 and 18: LP Position UncertaintyPosition Unc
Page 19 and 20: Central Bodies (Coppola)• Celesti
Page 21 and 22: Central Bodies (cont’d)• CB use
Page 23 and 24: CB Mu Values• Orbital element con
Page 25 and 26: Default CB Ephemeris Settings• Su
Page 27 and 28: Modifying CB ephemeris• Ephemeris
Page 29 and 30: Default Moon Attitude• Interpolat
Page 31 and 32: Attitude Reference• "Report of th
Page 33 and 34: Eclipse and Obstruction (LOS)• ST
Page 35: LTD Issues• Graphics display True
Page 39 and 40: Future direction (Woodburn)• HPOP

AGI Technology Beyond Earth Orbit

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