support navigation structure general satellite info ilrs support retroreflector info center of mass site performance info

ANDE

ILRS Mission Support Status:

SLR will augment GPS and SSN observations to improve precision orbit determination process.

Current ILRS Tracking Statistics:

SatelliteSite NameStationStart DateEnd DateNo. PassesNo. Points
ANDECBorowiec781114-Sep-200921-Nov-2009742
ANDECChangchun723721-Aug-200901-Aug-201075727
ANDECConcepcion740504-Feb-201004-Feb-201016
ANDECGraz783926-Aug-200908-Jul-2010601,430
ANDECGreenbelt710515-Aug-200923-Apr-2010902,519
ANDECHaleakala711924-Aug-200902-Sep-2009428
ANDECHartebeesthoek750117-Aug-200902-Feb-2010215
ANDECHerstmonceux784028-Aug-200926-Jun-2010731,255
ANDECKatzively189318-Aug-200903-Jul-201011122
ANDECKoganei730808-Nov-200908-Nov-2009111
ANDECMatera794109-Sep-200912-Oct-2009212
ANDECMonument Peak711014-Aug-200921-Jul-201021303
ANDECMount Stromlo782525-Aug-200917-May-20101263
ANDECPotsdam784119-Sep-200927-Dec-20096178
ANDECRiga188425-Aug-200915-Nov-2009222
ANDECSan Fernando782407-Sep-200917-Mar-2010983
ANDECSan Juan740613-Sep-200927-Jul-2010651
ANDECStafford786518-Aug-200918-Aug-2009125
ANDECYarragadee709004-Aug-200922-Jul-20103228,122
ANDECZimmerwald781009-Sep-200908-Jun-201014180
ANDEPBorowiec781119-Sep-200919-Sep-2009112
ANDEPChangchun723721-Aug-200904-Feb-201036282
ANDEPGraz783926-Aug-200901-Feb-201026499
ANDEPGreenbelt710520-Aug-200916-Mar-2010471,202
ANDEPHaleakala711924-Aug-200918-Dec-2009329
ANDEPHartebeesthoek750102-Sep-200902-Feb-2010218
ANDEPHerstmonceux784028-Aug-200906-Mar-201044584
ANDEPKatzively189321-Sep-200923-Nov-2009875
ANDEPKoganei730807-Sep-200907-Sep-200913
ANDEPMatera794112-Oct-200912-Oct-2009229
ANDEPMonument Peak711014-Aug-200923-Feb-2010558
ANDEPMount Stromlo782528-Aug-200908-Feb-201024
ANDEPPotsdam784123-Sep-200923-Sep-2009110
ANDEPRiga188425-Aug-200925-Aug-2009110
ANDEPSan Fernando782408-Sep-200925-Oct-2009431
ANDEPSimeiz187323-Aug-200923-Aug-200916
ANDEPYarragadee709004-Aug-200916-Mar-20101282,940
ANDEPZimmerwald781027-Aug-200927-Aug-2009122

 

ANDE Mission Support Request Form (December 2008):

Name: ANDE Castor & ANDE Pollux
Host: Naval Research Laboratory

Primary Technical Contact: Andrew Nicholas
Technical Contact Mailing Address: Naval Research Laboratory
Code 7669, 4555 Overlook Avenue, Washington, D.C., 20375 USA

Technical Contact Phone: 202-767-2441
Technical Contact Fax: 202-767-9388
Technical Contact Email: andrew.nicholas @ nrl.navy.mil

Alternate Technical Contact: Mark Davis
Alternate Technical Contact Mailing Address: Naval Research Laboratory
Code 8123, 4555 Overlook Avenue, Washington, D.C., 20375 USA
Alternate Technical Contact Phone: 202-767-2829
Alternate Technical Contact Fax: 202-404-1226
Alternate Technical Contact Email: mark.davis @ nrl.navy.mil

Primary Science Contact: Andrew Nicholas
Science Contact Mailing Address: Naval Research Laboratory
Code 7669, 4555 Overlook Avenue, Washington, D.C., 20375 USA

Science Contact Phone: 202-767-2441
Science Contact Fax: 202-767-9388
Science Contact Email: andrew.nicholas @ nrl.navy.mil

Alternate Science Contact: Mark Davis
Alternate Science Contact Mailing Address: Naval Research Laboratory
Code 8123, 4555 Overlook Avenue, Washington, D.C., 20375 USA
Alternate Science Contact Phone: 202-767-2829
Alternate Science Contact Fax: 202-404-1226
Alternate Science Contact Email: mark.davis @ nrl.navy.mil

MISSION SPECIFICS:

Determine total atmospheric density in orbital plane, measure neutral winds, temperature and composition.
Satellite Laser Ranging (SLR) Role of Mission: Augment SSN observations to improve precision orbit determination process.
Anticipated Launch Date: 1 May 200
Expected Mission Duration: ANDE Castor (19" diameter sphere) 2 year, ANDE Pollux (19" diameter sphere) 1 yrs

ANTICIPATED ORBITAL PARAMETERS:

Altitude: 350 km
Inclination: 51.6 deg
Eccentricity: 0.0007

TRACKING REQUIREMENTS:

Tracking Schedule: targeted campaigns, continuous when available
Spatial Coverage: back-to-back revs requested
Temporal Coverage: TBD
Data Accuracy: Better than 1 cm, full-rate data when available

OPERATIONS REQUIREMENTS:

Mission Coordinator (ILRS, Subnetwork, etc.):
Priority of SLR for POD: Moderate
Other Sources of POD (GPS, PRARE, Doppler, etc.): GPS, SSN radar and optical
Primary Analysis Center: Naval Research Laboratory
Normal Point Time Span (sec): 5 s
Subnetworks/Stations Requested to Track: Any Available
Data Delivery Time Requirements: TBD

RETROREFLECTOR ARRAY INFORMATION:

Description of Array and Location: Each spacecraft is fitted with a set of thirty 12.7 mm (Edmunds same as previous ANDE flight) diameter optical retro reflectors for SLR located along latitudinal bands at ±90º, ±52.5º and ±15º with one, six and eight retros per band respectively.

Technical Contact for Array Correction/Center of Mass: Mark Davis / Ted Finne
Phone No.:  202-767-2829/202-404-3978
E-mail Address: mark.davis @ nrl.navy.mil, ted.finne @ nrl.navy.mil

Other Comments:  The science goals of this mission include:

  • Verify the secular decrease in thermospheric density (and secular thermospheric cooling);
  • Measure neutral winds, temperature and composition;
  • Confirm or refute severe deficiencies in NRLMSISE-00 and similar empirical thermospheric models, as inferred from long-term orbit data;
  • Revolutionize the formulation of the NRLMSISE-00 thermospheric solar response model (under the likely result that NRLMSISE-00 significantly overestimates the total mass density at solar minimum);
  • Allow precise studies and testing of models for estimating satellite and spacecraft ballistic coefficients, greatly improving estimates of drag in predictions of orbit trajectories of operational systems;
  • Combined with technology developed at NRL, will permit direct determination and improve estimates of true spacecraft and satellite ballistic coefficients and of local thermospheric density for daily drag prediction.

MISSION CONCURRENCE:

As an authorized representative of the Atmospheric Neutral Density Experiment mission, I hereby request and authorize the ILRS to track the satellite described in this document.

Name (print): Andrew Nicholas
Date: 07/15/09
Signature:
Position: Principal Investigator, ANDE-2
Naval Research Lab
Code 7669
Washington, DC 20275

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