PASSIVE/RANGING/TRACKING PROCESSING METHOD FOR COLLISION AVOIDANCE GUIDANCE
First Claim
1. A passive/ranging/tracking method for tracking a target, comprising the steps of:
- (a) producing at least a first set of direction measurements and a second set of direction measurements of the target with respect to a carrier from at least a first passive sensor and a second passive sensor through at least a first tracking control device and a second tracking control device respectively, wherein said first and second passive sensors are installed on said carrier and each of said first and second passive sensors is controlled by said respective tracking control device to keep pointing to said target;
(b) producing navigation data of said carrier, including position, velocity, and attitude data, using an onboard navigation system;
(c) computing a target range vector measurement of said target with respect to said carrier using said two first set and second set of direction measurements; and
(d) extracting three-dimensional position and velocity information of said target at a current epoch using said target range vector measurement.
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Abstract
A passive/ranging/tracking processing method provides information from passive sensors and associated tracking control devices and GPS/IMU integrated navigation system, so as to produce three dimensional position and velocity information of a target. The passive/ranging/tracking processing method includes the procedure of producing two or more sets of direction measurements of a target with respect to a carrier, such as sets of elevation and azimuth angles, from two or more synchronized sets of passive sensors and associated tracking control devices, installed on different locations of the carrier, computing the range vector measurement of the target with respect to the carrier using the two or more sets of direction measurements, and filtering the range vector measurement to estimate the three-dimensional position and velocity information of the target.
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Citations
44 Claims
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1. A passive/ranging/tracking method for tracking a target, comprising the steps of:
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(a) producing at least a first set of direction measurements and a second set of direction measurements of the target with respect to a carrier from at least a first passive sensor and a second passive sensor through at least a first tracking control device and a second tracking control device respectively, wherein said first and second passive sensors are installed on said carrier and each of said first and second passive sensors is controlled by said respective tracking control device to keep pointing to said target;
(b) producing navigation data of said carrier, including position, velocity, and attitude data, using an onboard navigation system;
(c) computing a target range vector measurement of said target with respect to said carrier using said two first set and second set of direction measurements; and
(d) extracting three-dimensional position and velocity information of said target at a current epoch using said target range vector measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A passive/ranging/tracking method for tracking a target, comprising the steps of:
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(a) producing at least a first set of direction measurements and a second set of direction measurements of the target with respect to at least a first carrier and a second carrier from at least a first passive sensor and a second passive sensor through at least a first tracking control device and a second tracking control device respectively, wherein said first and second passive sensors and said first and second tracking control devices are installed on said carriers respectively and each of said first and second passive sensors is controlled by said respective tracking control device to keep pointing to said target;
(b) producing navigation data of said first and second carriers, including position, velocity, and attitude data, using a first onboard navigation system provided on said first carrier and a second onboard navigation system on said second carrier;
(c) computing a target range vector measurement of said target with respect to each of said carriers, using said two or more sets of direction measurements, wherein said first carrier and said second carrier are data-linked; and
(d) extracting three-dimensional position and velocity information of said target, expressed in a navigation coordinate system, at a current epoch using said target range vector measurement. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification