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US 11,199,387 B2Granted
Accurate range-to-go for command detonation
AssigneeBAE Systems Information and Electronic Systems Integration Inc.
InventorsMichael J. Choiniere, Bruce Winker
Life of this patent
Estimating the term…
Abstract
The system and method for accurately determining range-to-go for the command detonation of a projectile. Using dual laser and/or radio frequency detectors on the tail and on the nose of a spinning projectile to determine the range-to-go, time-to-go, or lateral offset from the projectile to the target.
Claims18
A method for controlling detonation, comprising:
- providing a projectile comprising a tail portion and a front portion;
- detecting a laser signal via a tail detector mounted about the tail portion of the projectile;
- determining a first time at which the laser signal is detected via the tail detector;
- detecting a reflected laser signal via a front detector mounted on the front portion of the projectile, the reflected laser signal being the laser signal that has reflected off a target;
- determining a second time at which the reflected laser signal is detected via the front detector;
- comparing the first time to the second time to determine a time delay;
- determining a lateral offset between the projectile and the target using the time delay;
- and
- determining an angle, theta, using the time delay to determine the detonation of the projectile,
- wherein the first signal further comprises a first pulse repetition interval and the second signal further comprises a second pulse repetition interval, and
- wherein the lateral offset between the projectile's trajectory and the target's actual position is determined by measuring a time expansion between the first pulse repetition interval and the second pulse repetition interval and convolving the projectile's velocity with the time-to-go thereby improving an accuracy of a detonation.
8 more elements
A method for controlling detonation, comprising:
- providing a projectile comprising a tail portion and a front portion;
- detecting a first RF signal via a tail detector mounted on the tail portion of the projectile;
- determining a first time at which the first RF signal is detected via the tail detector;
- detecting a reflected RF signal via a front detector mounted on the front portion of the projectile, the reflected RF signal being the first RF signal that has reflected off a target;
- determining a second time at which the reflected RF signal is detected via the front detector;
- comparing the first time to the second time to determine a time delay;
- determining a lateral offset between the projectile and the target;
- and
- determining an angle, theta, using the time delay between detection by the tail detector and detection by the front detector to accurately control the detonation,
- wherein the first signal further comprises a first pulse repetition interval and the reflected signal further comprises a second pulse repetition interval, and
- wherein the lateral offset between the projectile's trajectory and the target's actual position is determined by measuring a time expansion between the first pulse repetition interval and the second pulse repetition interval and convolving the projectile's velocity with the time-to-go thereby improving an accuracy of a detonation.
8 more elements
A system for controlling detonation, the system comprising:
- a projectile comprising a tail portion and a front portion, including a tail detector mounted proximate the tail portion and a front detector proximate the front portion;
- and
- a processor in communication with the projectile, the processor configured to:
- detect a first RF signal via the tail detector;
- determining a first time at which the first RF signal is detected via the tail detector;
- detecting a reflected RF signal via the front detector, the reflected RF signal being the first RF signal that has reflected off a target;
- determining a second time at which the reflected RF signal is detected via the front detector;
- comparing the first time to the second time to determine a time delay;
- determining a lateral offset between the projectile and the target;
- and
- determining an angle, theta, using the time delay between detection by the tail detector and detection by the front detector to accurately control the detonation,
- wherein the first signal further comprises a first pulse repetition interval and the reflected signal further comprises a second pulse repetition interval, and
- wherein the lateral offset between the projectile's trajectory and the target's actual position is determined by measuring a time expansion between the first pulse repetition interval and the second pulse repetition interval and convolving the projectile's velocity with the time-to-go thereby improving an accuracy of a detonation.
10 more elements
Dependencies are inferred from the claim text.