Research Summaries

Back Satellite Vulnerability Planning Models

Fiscal Year 2015
Division Research & Sponsored Programs
Department Naval Research Program
Investigator(s) Luqi
Sponsor NPS Naval Research Program (Navy)
Summary Proposed research seeks to assess and improve capabilities of Satellite Vulnerability (SATVUL) planning systems. SATVUL planning systems provide DOD forces with advance notification of overflight by spacecraft, which is critical to the Fleet's ability to operate and fight against near-peer adversaries. The study will focus on accuracy of predictions, based on models used in current and planned systems. We will identify differences between the SGP4 (USAF) and PPT3 (USN) propagation models, and analyze them to determine the impact of these differences on positional error in orbital determination. This will be done via analysis of the numerical approximations used in the models, a review of the scientific literature on physical effects affecting calibration of the models, analysis of effects due to computational round off errors in algorithms based on those models, accuracy of timestamps associated with observations, and consideration of the types of digital filters used to smooth out noisy data. Results of the study will assess effectiveness of current approaches to SATVUL planning, determine the sensitivity of prediction accuracy to various model parameters, and identify affordable improvements.
Keywords
Publications Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal
Data Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal