%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % 52.002 Lessard % % Attitude Data % % README % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% T0: 12\13\2015 7:34:0.07 GMT Launcher Settings: ================== Launcher: ASC Athena Latitude: 69.2942 Degrees Longitude: 16.0193 Degrees Altitude: 171.3 Feet Elevation: 80.28 Degrees Azimuth: 12.08 Degrees Bank: 0 Degrees Attitude Output: ================== time: Seconds from T0, reference above roll: Euler rotation angle* (degrees) about the longitudinal geometric axis, X, through the nose (FWD) yaw: Euler rotation angle* (degrees) about lateral axis, Z, at 180 degrees from the rail pitch: Euler rotation angle* (degrees) about the lateral axis, Y, at 90 degrees from the rail roll_rate: Roll rate (about the spin axis, X) in cycles/second (Hz) a11: Element 1 (row 1, column 1) of 'ENU'** a12: Element 2 (row 1, column 2) of 'ENU'** a13: Element 3 (row 1, column 3) of 'ENU'** a21: Element 4 (row 2, column 1) of 'ENU'** a22: Element 5 (row 2, column 2) of 'ENU'** a23: Element 6 (row 2, column 3) of 'ENU'** a31: Element 7 (row 3, column 1) of 'ENU'** a32: Element 8 (row 3, column 2) of 'ENU'** a33: Element 9 (row 3, column 3) of 'ENU'** X_Az: Azimuth of spin axis (degrees), X, from the fixed, local geodetic, East, North, Up (ENU) reference frame X_El: Elevation of spin axis (degrees), X, from the fixed, local geodetic, East, North, Up (ENU) reference frame Y_Az: Azimuth of lateral axis (degrees), Y, from the fixed, local geodetic, East, North, Up (ENU) reference frame Y_El: Elevation of lateral axis (degrees), Y, from the fixed, local geodetic, East, North, Up (ENU) reference frame Z_Az: Azimuth of lateral axis (degrees), Z, from the fixed, local geodetic, East, North, Up (ENU) reference frame Z_El: Elevation of lateral axis (degrees), Z, from the fixed, local geodetic, East, North, Up (ENU) reference frame F_az: Azimuth of payload velocity vector (degrees), from the fixed, local geodetic, East, North, Up (ENU) reference frame F_el: Elevation payload velocity vector (degrees), from the fixed, local geodetic, East, North, Up (ENU) reference frame latg: Geodetic latitude of the payload, in degrees long: Geodetic longitude of the payload, in degrees alt: Altitude, in meters Position Source: GPS ================ Attitude Source: GLNMAC ================ * Euler angles are body to reference (defined above) in a 3-2-1 sequence ** 'ENU' is a 3x3xn direction cosine matrix representing rotation from the payload frame to the 'ENU' reference frame, where the payload frame is defined by X (column 1) pointing FWD through the payload spin axis, Y (column 2) through payload 90 degrees, and Z (column 3) through payload 180 degrees, where payload 0 degrees points towards the rail and increases in a clockwise direction looking forward (through the nose). The 'ENU' reference is the local geodetic East, North, Up, coordinate frame.