Orbital Characteristics of MeghaTropiques T'Ravindra Babu M'S'Jayashree G'Raju ISRO Satellite Centre

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Orbital Characteristics of Megha-TropiquesT.Rav
indra BabuM.S.JayashreeG.RajuISRO Satellite
CentreBangalore
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• Payloads
• Microwave Analysis and Detection of Rain and
• Atmospheric Structures (MADRAS)
• A microwave instrument for retrieval of water
• vapour vertical profiles (SAPHIR)
• A radiometer devoted to the measurement of
• Outgoing radiative fluxes at the top of
  atmosphere
• (SCARAB)

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Keplerian Elements
?
?
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• Repeat Cycle
• Non-sun synchronous orbit
• Ground track repetitivity
• Prograde orbit (inclination, i lt 90?)
• Repeat cycle as function of nodal days

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• Repeat Cycle options
• Altitude Profile

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• Repeat Cycle - options
• Revolutions per day

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• Repeat Cycle Chosen orbit
• No. of nodal days in the cycle 7
• No. of revolutions per cycle 97
• Nodal period of the orbit 6116.4 sec
• No. of revolutions per day 14.13
• Rate of Right Ascension of node - 6.01
  deg/day
• Apsidal rotation rate (frozen perigee) 0
  deg/day

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Sun-aspect Angle
Sun-aspect angle
Z
x
Y
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• Sun Angles
• Sun Aspect Angle variation

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Sun Angles
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• Radio visibilities in one cycle

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• Ground Trace

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• Frozen orbit analysis

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• Eclipse Duration

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Local Time
Descending Node local time of 1200
N
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• Local Time change

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Ground Track Velocity
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Ground track azimuth
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Earth coverage