ABSTRAKSI: Fleet management system (sistem pemantauan armada) berfungsi untuk memberikan laporan secara berkala tentang posisi, kecepatan dan letak relatif suatu armada terhadap area tertentu. Sistem pemantauan armada yang dibangun memanfaatkan tiga teknologi, yaitu teknologi Global Positioning System (GPS) sebagai penentu posisi armada dalam bentuk data geospasial, dan teknologi Geographic Information System (GIS) sebagai penyedia informasi geografis baik berupa citra seperti foto udara maupun data statistik, serta teknologi Global System for Mobile Communications (GSM) sebagai media transportasi data antara armada dan pusat kontrol. Sistem yang dibangun akan dianalisa tingkat akurasinya dalam menentukan posisi, kecepatan dan letak relatif terhadap area geofence tertentu dengan menggunakan dua macam perhitungan Great Circle Distance yaitu persamaan Haversine dan persamaan Vincenty.
Berdasarkan hasil pengujian data yang dikirimkan oleh GPS, persamaan Vincenty mampu menghitung jarak tempuh dengan menghasilkan akurasi hingga 11-12 m. Sedangkan persamaan Haversine memiliki faktor koreksi (error) sebesar 3,43%. Ketelitian dari data GPS diantaranya dipengaruhi oleh kemampuan alat receiver, pengaruh cuaca dan kualitas sinyal GSM di area penelitian.Kata Kunci : fleet management system, Global Positioning System (GPS), Geographic Information System (GIS), Global System for Mobile Communications (GSM), geofence, Great Circle Distance, persamaan Haversine, persamaan VincentyABSTRACT: Fleet management system is a system which can deliver report periodically about position, speed, and relatif distance of a fleet around specific area. It consist of three main technologies, Global Positioning System (GPS) to give the information about fleet position as geospatial data, Geographic Information System (GIS) to provide geographic information like photoes or statistic data, and Global System for Mobile Communications (GSM) as data transportation media between fleet and Control Center. This system will be analysed on how accurate the position, speed and relative distance of a fleet on specific geofence can be made by using two different Great Circle Distance Formula, Haversine formula and Vincenty formula.
Based on GPS fleet position data testing result, Vincenty formula have better accuracies than Haversine formula. Vincenty formula is able to calculate the fleet distance nearly 10-12 m accurately. While Haversine formula have error probability as 3,43%. Fleet position data from GPS can be influenced by receiver device capability, weather, and signal quality of GSM.Keyword: fleet management system, Global Positioning System (GPS), Geographic Information System (GIS), Global System for Mobile Communications (GSM), geofence, Great Circle Distance, Haversine formula, Vincenty formula