General and numerical approach to the sphere solution in FAST

Details General and numerical approach to the sphere solution in FAST General and numerical approach to the sphere solution in FAST

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989hmps....3..141g&link_type=abstract

In its The Hipparcos Mission. Prelaunch Status. Volume 3: The Data Reductions p 141-162 (SEE N90-13548 05-18)

Statistics

Computation

2

Computerized Simulation, Data Reduction, Great Circles, Nonlinear Programming, Reference Stars, Astrometry, Covariance, European Space Programs, Feasibility Analysis, Hipparcos Satellite, Linearization, Teams

Scientific paper

The general approach to the sphere solution problem, as adopted by the FAST (fundamental astronomy by space techniques) consortium, for the Hipparcos satellite data reduction, is presented. It consists in the combination of the reference great circle data sets accumulated throughout the mission, and the solution for the great circle zero points, and is carried out on a subset of 40 to 60,000 of the program stars. In the scope of the analysis the following tasks are discussed: the nonlinear least squares problem; the system resolution; the computational complexity, the feasibility and the choice of the method; the variance-covariance matrix; and the numerical features of the system. Simulations show that, based on only half a year of data, program star positions with an accuracy of about 10 milli arcsec is achieved. Moreover, the full astrometric accuracy results from a treatment of the full 2.5 years of mission data.

Affiliated with

Also associated with

No associations

Rating

General and numerical approach to the sphere solution in FAST does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with General and numerical approach to the sphere solution in FAST, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and General and numerical approach to the sphere solution in FAST will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1854845