How to perform GPS coordinates triangulation in JavaScript?

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I have two GPS coordinates and a distance from each point. I would like to automate the calculation of the two possible GPS coordinates that will match these constraints.

Any ideas on how to start?

gps coordinates javascript
2 Answers

You might use something like a reverse haversine function. We had some proposal on the python haversine package but nothing in production. https://github.com/mapado/haversine/pull/19

As Brad suggested, math might help you here. Once you get a formula representing your two circles, you "only" need to find the algorithm that gives you the intersection points (zero, two or infinite)

user_21113530

You can use the Turf.js library to perform advanced geospatial analysis in JavaScript. Triangulation is one the many possibilities.

Here is a code example of a triangulation to find the points that match two constraints of distance.

const center1 = [1.56, 44.58];
const distance1 = 127;
const circle1 = turf.circle(center1, distance1, {
  steps: 1000,
  units: "kilometers"
});

const center2 = [1.89, 44.97];
const distance2 = 89;
const circle2 = turf.circle(center2, distance2, {
  steps: 1000,
  units: "kilometers"
});

const intersections = turf.lineIntersect(circle1, circle2);
console.log(intersections);
// Outputs: [1.49712, 45.72128] and [3.01305, 45.07238]

Source: https://tzi.fr/js/triangulation/

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