Navigation by satellite using two-way range and doppler data

by J. H. Hutcheson, H. S. Schwimmer, J. D. Mallett

Purchase Print Copy

 FormatList Price Price
Add to Cart Paperback75 pages $25.00 $20.00 20% Web Discount

Presentation of a method for obtaining a navigation capability as a bonus to a communication satellite system. The Memorandum is primarily concerned with the technology of determining a user vehicle's position from a single satellite by obtaining multiple measurements of range and range-rate data. The computational method is based on a "six-element fix" where three unknown position components and three unknown velocity components are determined from a set of measurements of range and range-rate data. In principle, it is an orbit determination process in reverse. A simplified model of the process simulated many examples with vehicle speeds ranging from 20 K for surface vessels to 2000 K for supersonic aircraft and with satellite altitudes ranging from 500 n mi to synchronous, both polar and equatorial. Results indicate that satisfactory aircraft navigation accuracies may be achieved for orbital altitudes of less than 4000 n mi. 75 pp.

This report is part of the RAND Corporation Research memorandum series. The Research Memorandum was a product of the RAND Corporation from 1948 to 1973 that represented working papers meant to report current results of RAND research to appropriate audiences.

Our mission to help improve policy and decisionmaking through research and analysis is enabled through our core values of quality and objectivity and our unwavering commitment to the highest level of integrity and ethical behavior. To help ensure our research and analysis are rigorous, objective, and nonpartisan, we subject our research publications to a robust and exacting quality-assurance process; avoid both the appearance and reality of financial and other conflicts of interest through staff training, project screening, and a policy of mandatory disclosure; and pursue transparency in our research engagements through our commitment to the open publication of our research findings and recommendations, disclosure of the source of funding of published research, and policies to ensure intellectual independence. For more information, visit www.rand.org/about/principles.

The RAND Corporation is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors.