Automatic Determination of Tire Height for Improving Guidance Performance
First Claim
1. A system comprising:
- a receiver for receiving satellite transmissions;
an inertial sensor for detecting an inclination angle of a vehicle on which said receiver is deployed; and
an accuracy improvement module (AIM) for detecting an inaccuracy in a height used to determine an inclination compensation factor (ICF) associated with said inclination angle.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and method improve guidance system performance. An accuracy improvement module (AIM) can be configured to compare observed and expected inclination compensation factors (ICFs) at a plurality of inclination angles to detect an inaccuracy in antenna height. In response to detecting an inaccuracy, an AIM can determine a revised antenna height that more accurately represents the height of an antenna above ground. A proposed antenna height can be determined using an observed ICF. A fixed vehicle body height can be subtracted from the proposed antenna height to provide a proposed tire radius. The proposed tire radius can be compared to a table of standard tire radii to determine a tire radius value, which can then be added to the fixed vehicle body height to provide a revised antenna height. The revised antenna height can improve the accuracy or calculated ground positions, thereby improving guidance system performance.
-
Citations
21 Claims
-
1. A system comprising:
-
a receiver for receiving satellite transmissions; an inertial sensor for detecting an inclination angle of a vehicle on which said receiver is deployed; and an accuracy improvement module (AIM) for detecting an inaccuracy in a height used to determine an inclination compensation factor (ICF) associated with said inclination angle. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method, comprising:
-
receiving an observed inclination compensation factor (ICF) for an antenna atop a vehicle oriented at an inclination angle; comparing said observed ICF to an expected ICF for said antenna at said inclination angle; and in response to detecting an inaccuracy in said expected ICF, determining a revised antenna height using said observed ICF and said inclination angle. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. An apparatus comprising:
-
an error detection module configured to detect inaccuracies in an inclination compensation factor (ICF); a height determination module for determining a height value; and a storage device for storing data. - View Dependent Claims (16, 17, 18, 19)
-
-
20. At least one computer readable medium containing program instructions, comprising:
-
computer readable code for obtaining an expected ICF for an antenna mounted on a vehicle oriented at an inclination angle; computer readable code for obtaining an observed ICF at said inclination angle; computer readable code for detecting an inaccuracy in said expected ICF; computer readable code for determining a revised antenna height in response to detecting said inaccuracy in said expected ICF. - View Dependent Claims (21)
-
Specification