Utilização do módulo "creatalink" para a transmissão, em tempo real, de sinais de correção para sistemas GPS diferenciais (DGPS) / Use of creatalink module to transmit in real time corrections signals for differential GPS (DGPS) systems

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

GPS is a radio navigation system base on a satellite network providing 24 hours radio data to determine point coordinates and world wide coverage. The precision is in the decametric range which is not adequate to many applications. DGPS or Differential GPS is a technique used to improve this precision down to metric level adding informa-tion to the receiver. The GPS receiver can receive the information from geostationary satellites or radio links. This work presents a DGPS system with local radio link to support urban applications based on the low price pager Motorola Creatalink, operating in 931 MHz band. A pilot project was developed at the Engineering School of Sao Carlos (EESC) with the Refer-ence Station at the roof of Electrical Engineering Department. The results show a good improvement in the precision of the coordinates, presenting a high potential usage in medium size cities.

ASSUNTO(S)

pager radio link pager rádio enlace gps dgps dgps gps

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