Back to results
US 11,199,380 B1Granted
Radio frequency / orthogonal interferometry projectile flight navigation
AssigneeBAE Systems Information and Electronic Systems Integration Inc.
InventorsIra B. Ekhaus, Michael J. Choiniere, Quang M. Lam
Life of this patent
Estimating the term…
Abstract
The system and method of projectile flight management using a combination of radio frequency orthogonal interferometry for the long range navigation and guidance of one or more projectiles and a short range navigation and guidance system to provide for more accurate targeting, especially in GPS-denied and GPS-limited environments.
Claims12
A flight management system, comprising:
- a radio frequency orthogonal interferometry illuminator configured to generate a reference frame projected in the direction of a target area having radio frequency orthogonal interferometry waveforms and to further provide radio frequency (RF) communications comprising range information and mission information;
- at least one projectile configured to receive the radio frequency orthogonal interferometry waveforms and the range information and mission information;
- a short range guidance system on the projectile configured to provide guidance of the projectile from a hand-off point to the target area;
- and
- a non-transitory computer-readable storage medium carried by the projectile having a set of instructions encoded thereon that when executed by one or more processors, provide guidance and navigation of the projectile, the set of instructions being configured to cause the one or more processors to perform:
- processing azimuth and elevation information from the radio frequency orthogonal interferometry waveforms;
- processing the range information and mission information from the RF communications;
- determining polar coordinates of the projectile using the azimuth, elevation and range information, wherein the polar coordinates are relative to the radio frequency orthogonal interferometry illuminator;
- guiding the projectile along a trajectory within the reference frame to the hand-off point;
- switching to the short range guidance system at the hand-off point;
- and
- guiding the projectile from the hand-off point to the target area using the short range guidance system.
9 more elements
Dependencies are inferred from the claim text.