13th International Laser Ranging
"Toward Millimeter Accuracy"
Target Design, Signatures, and Biases
(G. Appleby and G. Bianco, for V. Vasiliev)
|Retroreflector Array Transfer Functions
|Difference of LAGEOS satellite response from raw data
analysis of the collocation experiment between the Grasse Satellite
and Lunar Laser Ranging stations
|Recovery of target response function for centre-of-mass
corrections of spherical satellites
| International experiment in space for investigation
of a novel-type laser retroreflector
|Development and on-orbit performance of moderate-cost
spherical retroreflector arrays for the STARSHINE program
| Reflector arrangement on H2A-LRE satellite
|The Atmospheric Neutral Density Experiment: a Mission
|Design of a laser retro-reflector for the first satellite
ranging mission in S. Korea on an elliptical orbit
|Laser Retroreflector Array (LARA) for IRS Mission
|LAGEOS-2 spin rate and orientation
This was a full session dealing with current and future laser reflector
arrays. There is a need to understand the interactions between the arrays
and the interrogating laser pulses in order not to degrade mm-levels of
measurement precision when computing centre-of-mass corrections. Knowledge
of the array configurations can also be exploited to determine spacecraft
attitude through laser ranging and solar-glint analyses. New arrays are
being developed which could open up new applications for SLR
- LAGEOS there is theoretical, empirical and observational evidence
for the need at mm levels of precision to apply system-dependent centre-of-mass
(CoM) values to the data;
- There are also aberration-space effects at the few mm level that have
- CoM values were derived for LAGEOS, AJISAI and ETALON that are applicable
to the major system types weak SPAD, strong C-SPAD, MCP.
- The unique opportunity of co-located systems at Grasse was exploited
as a check on system-dependent CoM corrections for LAGEOS and the large
T/P ring array.
- The point source Luneberg lens on METEOR-3 looks to be a good zero-signature
target for further work, although there are link-budget issues;
- The multi-array REFLECTOR satellite continues to be a challenge for
interpretation of full-rate data for attitude-dynamics studies.
Spin-vector, velocity aberration
- The spin rate of LRE has been determined from sparse SLR and optical
- An operational system has been set up to record flash data at millisecond
resolution during normal SLR work and has been used to determine LAGEOS-2
spin vector evolution for more than two years.
- A theoretical treatment of the velocity aberration effect shows it
to be independent of the refractive index of the CCR medium, which thus
cannot be chosen to circumvent the need for CCR-spoiling.
Starshine , ANDE, IRS
- The ongoing Starshine project has objectives including outreach and
a retro-aging element.
- The Atmospheric Neutral Density Experiment for shuttle launch by NRL
includes novel active CCRs for telemetry through modulation of laser
beams and two spherical satellites, active and passive.
- The Indian Space Research Organisation is recommending that its future
remote-sensing missions carry laser arrays to support precise orbit