Search results
Initial and Final Courses of a Great Circle . The initial course always has same name as the initial latitude and east or west direction of the course. The final course always has the opposite name from final latitude unless initial position and final position are in different hemispheres, when the final will have same
27 lis 2013 · In this paper, the COFI method has been developed to calculate the waypoints along the GCT successfully using the multiple products of the vector algebra (VA-MP). Due to fixing the initial great circle course, the GCT can be determined and the waypoints along the GCT can be calculated directly.
Step 1. Finding the great circle distance (D) and the initial great circle course angle (C) as shown in Figure 1. The great circle distance and the initial course angle can be calculated by the side cosine law and the four-parts formula of the spherical trigonometry, respectively as (Chen et al., 2004): cosD = sinL F sinL T +cosL F cosL T ...
Do we have a visual diagram to handle the shortest route? In this paper, a graphical method (GM) is proposed to solve the GCR problems based on the celestial meridian diagram (CMD) in celestial navigation. Unlike developed algebraic methods, the GM is a geometric method.
1 maj 2013 · By applying the formulae of the divided spherical triangle, waypoints on a great circle track can be obtained directly without finding the initial great circle course angle in advance.
Worked examples are provided to demonstrate calculating great circle tracks between two points by finding the initial course, final course, distance, vertex position, and where the track crosses specific lines of longitude and latitude.
Great circle sailing- Napier's Rules To find the position of the vertex you will first have to find the great circle initial course angle A. This will be found by the cosine rule We will then know two parts of the triangle and can find any other part. The parts we know are Angle A and the Co-Latitude of A (PA).
