This document describe the hardware interface of the SIMCom SIM18 module that can be used as a stand alone or Aided GPS receiver. As SIM18 can be integrated with range of applications, all functional components of SIM18 are described in great detail.

matlab读取GPS时间信息，UTC代码- GPS2UTC Convert GPS time tags to UTC(GMT) time accounting for leap seconds GPS2UTC(date) corrects an array of GPS dates(in any matlab format) for leap seconds and returns an array of UTC datenums where: UTC =