Michael Gunawan

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— Location fingerprinting in WiFi positioning has been widely used in indoor environments. The key issue of the fingerprinting technology is the fingerprint database. The disadvantages of this technology are the database generation and maintenance requirements. The conventional method to create the database is that people carry out the survey manually (that(More)
In order to prevent collision of the train movement or derailment, Automatic train protection (ATP) is needed as an important part of signaling system. Conventionally, a transponder or electro-magnet is used for communication between trackside device and onboard device of the ATP. ATP is not applied yet in Indonesia till now and all trains are operated by(More)
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