It was urgent to develop the satellite data receiving system based on embedded technology in order to improve the capability of the user data receiving station and reduce the cost.
Mobile computing devices such as PDA, mobile phone are of limited resource and slow Internet access capability, so the speed of receiving email is relatively slow.
移动计算设备如pda、手机等具有资源少、网络速度慢的特点，因而其接收电子邮件的速度较慢。
3
M sequence signal can be chosen as the receiving deterministic pulse signal when using acoustic vector to determine the direction of the sound source. It possesses favorable anti-multipath capability.