| 摘要 |
<p>Signal processor for a GNSS receiver, in particular a GPS receiver, characterized by the use of un-refreshed volatile dynamic memory as a storage element for real-time digital data. The invention takes advantage from the fact that many memory units are used to store real-time data and are constantly overwritten at a rate which can conveniently be shorter than a mean retention time of a DRAM cell. Moreover several memories are used to store noise-dominated data which are then statistically analyzed in a way that can tolerate a small rate of retention errors. Thus the automatic refresh circuitry can be disposed of without adverse effect.</p> |
