Terdiridari kata Global Positioning Sistem, GPS ini merupakan sistem dalam satelit navigasi dan penentuan dari sebuah posisi. Terdapat banyak model GPS, salah satunya ada GPS Geodetik atau GPS Pemetaan. GPS yang satu ini adalah alat ukur yang menggunakan satelit, alat ini mampu menangkap signal dari L1, L2 atau GNSS. Prakteknyasinyal navigasi satelit itu kini bisa dimanfaatkan menggunakan perangkat smartphone, baik yang berbasis Android, Windows Phone, atau iPhone. Salah satu sistem navigasi satelit yang populer saat ini adalah GPS. GPS merupakan singkatan dari Global Position System. Selain GPS, ada beberapa sistem navigasi satelit yang serupa yaitu Kelebihandan Kelemahan GPS. Hadirnya sebuah teknologi tentunya ada kelebihan dan kekurangannya. Yang menjadi kekurangan dalam penggunaan GPS yaitu: Tingkat keakuratan tak selamanya presisi. Koordinat posisi yang di lacak oleh satelit mempunyai faktor kesalahan yang akan mempengaruhi tingkat ke-akuratan GPS. sumber: ShutterStock] Populasi aplikasi yang dibuat pada sistem operasi Android semakin meningkat. Salah satunya adalah aplikasi yang memanfaatkan fungsi dari lokasi dengan menggunakan GPS (Global Positioning System) atau yang biasa disebut location based services (LBS). Bagi para pembaca yang belum memahami pengertian location based services, mari simak penjelasan di bawah ini. Contohgps handheld. Contoh Gps geodetic. Dari segi hargapun GPS geodetic sangat jauh ketimbang gps handheld, untuk gps handheld sendiri ada di range 5-10 jutaan, sedangkan untuk gps geodetic ada di range 100-500 jutaan. Beberapa aplikasi GPS Geodetic. 1. Pengambilan titik batas wilayah ( membutuhkan ketelitian tinggi) 2. Pengukuran leger jalan. n6yiMT. Apakah arti spesifikasi GPS with A-GPS-Glonass yang biasanya tertera di bundle smartphone ?. Kalau selama ini pengguna ponsel sering mendengar apa itu GPS global positioning system namun saya yakin masih banyak lagi yang belum mengenal apa itu Glonass. Untuk ulasan tentang GPS with A-GPS-Glonass ikuti ulasan singkat di bawah ini. Spesifikasi ponsel disertai GPS sudah biasa namun ada tambahan 'with A-GPS-Glonass' itu baru pilihan yang bagus. Lalu apa beda GPS dan Glonass ?. Sebenarnya sama saja fungsi antara GPS dan Glonass, yaitu sebagai pemeta posisi bumi. Namun antara GPS dan Glonass tentu lain pengembangnya serta lain pula transmitter satelite yang digunakannya. Seperti diketahui, GPS dikembangkan oleh Departemen pertahanan Amerika Serikat dibawah kendali Departemen Angkatan Udara-nya. Glonass dikembangkan oleh pihak Rusia dibawah kendli Dewan pertahanan Ruang angkasa. Dengan berbagai isu politik dan ekonomi yang berkembang keduanya antara GPS dan Glonass sudah menjadi standart ganda dalam pengaplikasiannya. Apakah Glonass lebih canggih dari GPS ?. bisa dikatakan keduanya mempunyai keunggulan dan kekurangan sendiri-sendiri. Namun banyak alat sekarang ini yang menggunakan keduanya dalam satu perangkat. Seperti smartphone yang memang tidak ingin tunggal dalam menanam sistem GPS namun juga didalamnya disertai sistem Glonass sebagai penyeimbang. Dengan mengaplikasikan kedua sistem ini bersama-sama maka tingkat akurasi, ketelitian serta pemetaan dataran akan lebih minim kesalahan. Jadi smartphone yang didalamnya mempunyai fitur GPS with A-GPs-Glonass memang lebih akurat dibanding hanya dengan fitur GPS saja. Semoga ulasan tentang GPS dan Glonass diatas bermanfaat dan menambah pengetahuan pembaca semua. A-GPS and GPS are different navigational aids that both use information from satellites to determine their exact location on Earth. GPS stands for Global Positioning System. A GPS device communicates with 4 or more satellites to determine its exact location coordinates latitude and longitude anywhere on Earth. It works in any weather as long as the device has a clear line of sight to the satellites. A-GPS stands for Assisted Global Positioning System. While it works on the same principles as a GPS explained below, the difference here is that it gets the information from the satellites by using network resources mobile network, also called assistant servers. Comparison chart A-GPS versus GPS comparison chart A-GPSGPSStands for Assisted Global Positioning System Global Positioning System Source of triangulation information Radio signals from satellites and assistance servers mobile network cell sites Radio signals from GPS satellites Speed A-GPS devices determine location coordinates faster because they have better connectivity with cell sites than directly with satellites. GPS devices may take several minutes to determine their location because it takes longer to establish connectivity with 4 satellites. Reliability Location determined via A-GPS are slightly less accurate than GPS GPS devices can determine location coordinates to within 1 meter accuracy Cost It costs money to use A-GPS devices on an ongoing basis because they use mobile network resources. GPS devices communicate directly with satellites for free. There is no cost of operation once the device is paid for. Usage Mobile phones Cars, planes, ships/boats A GPS device in a car. The way it works GPS satellites circle the earth twice a day in an orbit. These satellites continuously send information to the earth via radio waves. Messages transmitted by the satellites include a the time the message was transmitted, b the ephemeris or the information about the orbit, and c the almanac or the health and rough orbits of all the satellites. GPS receivers use these signals by calculating the time at which the signals were sent by the satellites and time at which they were received on Earth. Once the GPS receiver knows the position of at least four satellites and the transmit time of each this is called time to first fix, it is able to lock its own location. This method of computing is called trilateration. It may take 3 sec to a couple of minutes to get the signal depending upon the location and amount of interference. Interferences may be because of the terrain or number of buildings, foliage, atmospheric inconsistencies etc. This would result in signals reflecting off and having multiple paths. Now, in case of an A-GPS device it uses the existing servers for of the mobile network tower and bases to get the information from the satellites. Since these servers are continually sending and receiving information there is no delay in knowing the exact orbit and time location of the satellites. In other words the time to first fix is a lot faster than a normal GPS. Also these servers have good computation power so they can analyze the fragmentary signals received from the GPS receiver and those received directly from the satellite and thus correct the error. It will then inform the receiver its exact location. On the other hand, an A-GPS device uses existing servers mobile network cellsites to get the information from the satellites. Since these servers are closer and better connected to mobile devices, and are continually sending and receiving information, there is no delay in knowing the exact orbit and time location of the satellites. In other words the time to first fix is a lot faster than a normal GPS. Moreover these servers have good computation power so they can analyze the fragmentary signals received from the GPS receiver and those received directly from the satellite and thus correct the error. It will then inform the receiver its exact location. Performance and cost A-GPS is faster in finding the location but GPS gives a more precise location information. While there is no additional cost involved in using GPS devices, an A-GPS has additional cost involved because it uses services and resources of the wireless carrier's mobile network. Some A-GPS models have the ability to link up to GPS satellites directly in case the assistance server is not available or if it out of cellular network coverage area, but GPS devices cannot log on to a cellular network. Video explaining the difference References Wikipedia Assisted GPS Wikipedia Global Positioning System Buy GPS devices Follow Share Cite Authors Share this comparison If you read this far, you should follow us "A-GPS vs GPS." Diffen LLC, Web. 8 Jun 2023.

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