1. In calculating: : is the latitude of the fixed transmitter (decimal lt radians) : is the longitude of the fixed transmitter Lt (decimal radians) : is the azimuth angle (decimal radians) α : is the separation distance to required d (m×500 metres) : is the semi-major axis with value 6378137 a metres : is the flattening of with value 1/298.25722210 fl : is the axis of (a×(1-fl)) b 2. Using an initial value, iterate the following three equations until the change in is less than 10-12. 3. Then: use the four-quadrant inverse tangent, Note use the four-quadrant inverse tangent, Note atan2.
1. In calculating: lt : is the latitude of the fixed transmitter (decimal radians) Lt : is the longitude of the fixed transmitter (decimal radians) α : is the azimuth angle (decimal radians) d : is the separation distance to required (m×500 metres) a : is the semi-major axis with value 6378137 metres fl : is the flattening of with value 1/298.25722210 b : is the axis of (a×(1-fl)) 2. Using an initial value, iterate the following three equations until the change in is less than 10-12. 3. Then: Note use the four-quadrant inverse tangent, Note use the four-quadrant inverse tangent, atan2.
Attachment-C--Draft-section-1454-Determination-docx.docx