## Accuracy of Graticule

In this lesson, we shall look at the manner in which the graticule can be represented depending on the required level of accuracy. In our earlier post, we had discussed regarding the change in latitude and then the change in longitude while flying from one place to another. A combination of Latitude and Longitude is used to define a specific position without ambiguity. Depending on the accuracy required, different types of co-ordinates are used. A degree of arc is the fundamental unit of angular measurement. One degree corresponds to 1/360…

## Change of Longitude

In this post, we shall understand about the change in longitude when we fly from one place to another. In our earlier lesson, we had discussed about the change in latitude while flying from a point to another point. CALCULATION OF CHLONG The change of Longitude while flying from a certain longitude to another is called as ChLong. To consider a calculation of ChLong, it is best to view the earth looking down onto one of the poles. Let us calculate the ChLong from a position at E170 to W030.…

## Change of Latitude

We will now look at what happens to the latitude, when we fly from one position to another on the earth’s surface in terms of the Change in the Latitude. In our earlier post we had learnt about the Latitude and Longitude Co-ordinate system for defining position accurately. In case you have missed it you may like to go through it before reading this post. ChLat is an abbreviation for a change of Latitude during a flight from one Latitude to another Latitude. We have learnt that the Equator cuts…