Sensor array dynamic position and orientation determination syst

Details Sensor array dynamic position and orientation determination syst Sensor array dynamic position and orientation determination syst

1988-09-13

1997-06-17

Cain, David C.

Boots, shoes, and leggings

3644491, G01C 2100

Patent

active

056403259

ABSTRACT:
A system, which uses inertial measurement units, is shown for determining the position and orientation of a towed array of sensors used for target detection. The system uses an onboard master inertial navigation system and a relative position determination mechanism to generate a first estimated position for each inertial measurement unit within the array. Each inertial measurement unit measures force and angular change information used by an onboard computer to create a second estimated position by known methods for each inertial sensor. An error signal represented by the difference between the two estimated positions for each inertial unit is processed over time by a Kalman filter to reduce the error in the heading and attitude determined for each inertial unit to establish an accurate location for each inertial unit and, thus, the towed array of such units.

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Orr Kelly, "Sub Duels Under Polar Ice": How Ready Is U.S.?, U.S. News & World Report, Mar. 5, 1984, p. 35.
Marc E. Liebman, "Towed Array Sonar", DS&E, Dec. 1986, p. 13.
Tim Carrington, "Undersea Arms Race Is Preoccupying Navies Of U.S., Soviet Union", The Wall Street Journal, Jun. 24, 1987.

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