Time-Diverse Doppler-Only LEO PNT: Initial Solution

Moore, Megan O.; Psiaki, Mark L.; Buehrer, R. Michael

i

Time-Diverse Doppler-Only LEO PNT: Initial Solution

2024-01-01
By Moore, Megan O. ; Psiaki, Mark L. ; Buehrer, R. Michael

File Language:

English

Details

Creators:

Moore, Megan O. ; Psiaki, Mark L. ; Buehrer, R. Michael
Corporate Creators:

Virginia Tech
Contributors:

Van Dyke, Karen
Corporate Contributors:

Center for Assured and Resilient Navigation in Advanced Transportation Systems (CARNATIONS) ; United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
Subject/TRT Terms:
Resource Type:

Manuscript
Right Statement:

Open Access
Geographical Coverage:

United States
Corporate Publisher:

Virginia Tech
Abstract:

This paper develops Doppler-based Geometric Dilution of Precision (D-GDOP) analysis for time-diverse Doppler-only positioning and presents an associated batch filter. The former Doppler-only positioning solution requires at least eight satellites to be view simultaneously and discards previous Doppler measurements. In cases where fewer than eight satellites are available, using Doppler measurements from multiple points in time allows a complete solution to be determined. In cases where eight or more are available, using additional time-samples can further reduce D-GDOP and improve positioning accuracy. This work presents an initial batch filter solution that assumes constant velocity and constant clock-offset rate. By considering an additional 10 seconds of previous measurements, position and clock-offset errors were cut in half. However, because these assumptions are unrealistic for significant time spans this work also presents and tests an initial time-varying Kalman filter model and defines a D-GDOP metric for it.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/80647/dot_80647_DS1.pdf
File Type:

[PDF - 3.85 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:5ad2510e4c54e202ca4f484f090ec71bb85edbc094146c6e68b5b51771d2e16d212ad20b7ad8dd5397eb9cf7507157e6a7722eb36e84739ca6162788ca335a05

File Language:

English

ON THIS PAGE

Details

Found an issue?

Send us an email at:

publishinghd@cdc.gov

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.