论文部分内容阅读
GPS等定位服务目前应用十分广泛,也给各厂家带来许多商机。统计数字显示全球手持GPS出货量由2005年的895万台增长到2006年约1500万台,
GPS and other positioning services are currently widely used, but also to bring a lot of business opportunities for the manufacturers. Statistics show that global handheld GPS shipments increased from 8.95 million units in 2005 to about 15 million units in 2006,