IMPROVED ALGORITHMS FOR RADAR-BASED RECONSTRUCTION OF ASTEROID SHAPES

Journal Article · Thu Oct 15 00:00:00 EDT 2015 · Astronomical Journal (Online)

DOI:https://doi.org/10.1088/0004-6256/150/4/114· OSTI ID:22520132

Greenberg, Adam H.; Margot, Jean-Luc ^[1]

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1. University California, Los Angeles, CA (United States)

We describe our implementation of a global-parameter optimizer and Square Root Information Filter into the asteroid-modeling software shape. We compare the performance of our new optimizer with that of the existing sequential optimizer when operating on various forms of simulated data and actual asteroid radar data. In all cases, the new implementation performs substantially better than its predecessor: it converges faster, produces shape models that are more accurate, and solves for spin axis orientations more reliably. We discuss potential future changes to improve shape's fitting speed and accuracy.

• OSTI ID: 22520132
• Journal Information: Astronomical Journal (Online), Vol. 150, Issue 4; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ACCURACY
ALGORITHMS
ASTEROIDS
ASTRONOMY
COMPARATIVE EVALUATIONS
COMPUTER CODES
IMPLEMENTATION
ORIENTATION
PLANETS
RADAR
VELOCITY