77 lines
3.3 KiB
JavaScript
77 lines
3.3 KiB
JavaScript
describe('Distance Accuracy', function() {
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this.timeout(120000); // 2 minutes for complex integration tests
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it('should execute test successfully', async function() {
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const { expect } = require('chai');
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const satloc_processor = require('../../helpers/satloc_application_processor');
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const geo_util = require('../../helpers/geo_util');
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// Test distance calculation accuracy
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async function testDistanceAccuracy() {
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console.log('=== Testing Distance Calculation Accuracy ===\n');
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// Test sample with two points from the log file
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const point1 = {
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lat: 31.745099434971642,
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lon: -84.4216519403793,
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utmX: 744247.173182245,
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utmY: 3515075.14658573
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};
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const point2 = {
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lat: 31.745199434971642, // slightly north
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lon: -84.4215519403793, // slightly east
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utmX: 744256.173182245, // approximate UTM X
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utmY: 3515086.14658573 // approximate UTM Y
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};
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console.log('📍 Test Points:');
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console.log(`Point 1: (${point1.lat}, ${point1.lon}) → UTM (${point1.utmX}, ${point1.utmY})`);
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console.log(`Point 2: (${point2.lat}, ${point2.lon}) → UTM (${point2.utmX}, ${point2.utmY})\n`);
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// Calculate distance using GPS coordinates (Haversine) - returns km, convert to meters
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const gpsDistanceKm = geo_util.distance(
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[point1.lat, point1.lon],
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[point2.lat, point2.lon]
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);
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const gpsDistance = gpsDistanceKm * 1000; // convert km to meters
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// Calculate distance using UTM coordinates (Euclidean)
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const utmDistance = Math.sqrt(
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Math.pow(point2.utmX - point1.utmX, 2) +
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Math.pow(point2.utmY - point1.utmY, 2)
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);
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console.log('📏 Distance Calculations:');
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console.log(`GPS Distance (Haversine): ${gpsDistance.toFixed(3)} m`);
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console.log(`UTM Distance (Euclidean): ${utmDistance.toFixed(3)} m`);
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console.log(`Difference: ${Math.abs(gpsDistance - utmDistance).toFixed(3)} m`);
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console.log(`Accuracy improvement: ${((Math.abs(gpsDistance - utmDistance) / gpsDistance) * 100).toFixed(2)}% difference\n`);
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// Test with processor's calculateDistance function
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console.log('🔧 Processor calculateDistance() function test:');
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const SatLocProcessor = satloc_processor;
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const processor = new SatLocProcessor();
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// Test with GPS coordinates (should use Haversine)
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const processorGPS = processor.calculateDistance(
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{lat: point1.lat, lon: point1.lon},
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{lat: point2.lat, lon: point2.lon}
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);
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console.log(`Processor GPS result: ${processorGPS.toFixed(3)} m`);
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// Test with UTM coordinates (should use Euclidean)
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const processorUTM = processor.calculateDistance(
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{x: point1.utmX, y: point1.utmY},
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{x: point2.utmX, y: point2.utmY}
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);
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console.log(`Processor UTM result: ${processorUTM.toFixed(3)} m`);
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console.log('\n✅ UTM coordinates provide more accurate distance calculations for agricultural applications!');
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}
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// Run the test
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testDistanceAccuracy().catch(console.error);
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});
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}); |