The Affordable Moving Surface Target Engagement (AMSTE) project
attempts to develop affordable solutions to the precise moving
target surface target engagement problem. Up to this point, most of
the error analysis performed for the AMSTE project has been at the
error variance level, generating root-sum-square (RSS) total errors
from error budgets consisting of constant error variances. In
reality, the level of error for both Global Positioning System
(GPS) positioning and radar targeting systems is highly dependent
upon the given situation (such as the distance between sensor and
target, the altitude differences, etc.) This research generates a
more comprehensive model of the GPS errors based upon the
underlying physics of the situation. It focuses on differential
tropospheric errors and multipath, as these are the primary error
source in a differential GPS targeting system. In addition to the
error model development, a code-based differential GPS and
differential ranging approach is implemented in simulation using a
Kalman filter. This approach uses GPS measurements collected by
each of the sensors and the weapon, and it uses ranging
measurements from the sensors to the bomb and the target. Multiple
cases are run varying 1) the number of GPS satellite measurements
tracked by each receiver, 2) whether or not the common GPS errors
are estimated, and 3) whether or not the bomb is tracked with the
same radar sensors that are tracking the target. The horizontal
DRMS position error during the terminal phase of the bomb
trajectory drops from about 6 meters to about 3.5 meters.
General
Imprint: |
Biblioscholar
|
Country of origin: |
United States |
Release date: |
September 2012 |
First published: |
September 2012 |
Authors: |
Daryl J Burnette
|
Dimensions: |
246 x 189 x 8mm (L x W x T) |
Format: |
Paperback - Trade
|
Pages: |
138 |
ISBN-13: |
978-1-249-45089-4 |
Categories: |
Books >
Social sciences >
Education >
General
|
LSN: |
1-249-45089-6 |
Barcode: |
9781249450894 |
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