Systems and methods for determining a positional state of an airborne array antenna using distributed accelerometers

摘要

Systems and methods for determining a positional state of an airborne array antenna using distributed accelerometers are described. One such method includes receiving and formatting acceleration data from each of a plurality of accelerometers mounted at different locations along the array antenna, receiving position and orientation data from an inertial navigation service (INS) mounted on the array antenna, generating an INS estimated position for each accelerometer based on the position and orientation data from the INS, generating an accelerometer estimated position for each accelerometer based on the acceleration data, determining a position and orientation of each accelerometer based on the respective INS estimated position and the respective accelerometer estimated position, determining an estimated position of a center and an orientation of the array antenna based on the determined position and orientation of each accelerometer, and adjusting a direction of the array antenna based on the estimated position of the array antenna.

主权项

1. A method for determining a positional state of an airborne array antenna using an array of distributed accelerometers, the airborne antenna array comprising a plurality of portions, the method comprising:
receiving and formatting, by a controller, acceleration data from each of a plurality of accelerometers mounted on different portions along the array antenna; receiving, by the controller, position and orientation data from an inertial navigation service (INS) mounted on the array antenna; generating, by the controller, an INS estimated position for each accelerometer based on the position and orientation data from the INS; generating, by the controller, an accelerometer estimated position for each accelerometer based on the acceleration data; determining, by the controller, a position and orientation of each portion of the array antenna based on the respective INS estimated position and the respective accelerometer estimated position by comparing the respective INS estimated position and the respective accelerometer estimated position to determine a respective updated accelerometer estimated position for each of the plurality of portions; determining, by the controller, an estimated position of a center and an orientation of the array antenna based on the determined position and orientation of each portion; and adjusting, by the controller, a direction of the array antenna based on the estimated position of the array antenna.