Satellite Planning Models
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Authors
Luqi
Wildt, Christ
Subjects
Naval Ship Vulnerability
Satellite Overflight Prediction
Accuracy Assessment
SGP4
PPT3
Satellite Overflight Prediction
Accuracy Assessment
SGP4
PPT3
Advisors
Date of Issue
2018-04
Date
Presented April 10-12, 2018
Period of Performance: 10/01/2017-9/30/2018
Period of Performance: 10/01/2017-9/30/2018
Publisher
Monterey, California: Naval Postgraduate School
Language
en_US
Abstract
Project Summary: Naval forces need prior knowledge of overflight by satellites for effective planning. This includes positions of friendly satellites that are expected to provide intelligence, surveillance, and reconnaissance (ISR) and communications support to our forces as well as positions of adversary and commercial satellites that could potentially detect and report planned Navy activities via various onboard sensors. We identified differences between the Simplified General Perturbations model 4 (SGP4) United States Air Force (USAF) and Position and Partials as a function of Time v3 (PPT3) United States Navy (USN) orbit propagation models, and determined their impact on positional error in orbit determination. PPT3 and SGP4 both perform well within the expected accuracy limits inherent in analytical models, with neither propagator demonstrating an accuracy rate decay that was significantly better or worse than the other. The two-line element (TLE) format is under change now, the new TLE and three-line element (3LE) formats are still under review, data in the new format is not being distributed, and the current version of SGP4 does not support the new formats. The new formats are to add additional types of information about the satellites, many not related to their orbits. Information in the new third line related to primary payload mission, primary mission status, and payload owner/operator provides context for satellite vulnerability planning, and is relevant for deciding which satellites should be monitored closely and choosing update rates for TLEs and 3LEs.
Type
Report
Description
NPS NRP Executive Summary
Series/Report No
Department
Organization
Naval Research Program
Identifiers
NPS Report Number
NPS-18-N382-A
Sponsors
N2/N6 - Information Warfare
Funder
NPS-18-N382-A
Format
7 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.