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Zero delay reduced memory GPS PRN code interpolation

机译:零延迟精简存储器GPS PRN代码插值

摘要

In accordance with the teachings described herein, system and methods are provided for a GPS PRN code interpolation scheme with a reduced memory requirement. An example GPS receiver system may include a memory, a local PRN code generator, and an interpolator. The memory may be used to store GPS PRN code received from a global positioning satellite. The local PRN code generator generates a replica PRN code having a repeating code that includes at least a first epoch and a second epoch. The interpolator determines an offset point in the first epoch of replica PRN code and interpolates the replica PRN code at a predetermined sample rate to generate an interpolated replica PRN code for use in correlating with the GPS PRN code.
机译:根据本文描述的教导,提供了用于具有减少的存储器需求的GPS PRN码内插方案的系统和方法。示例GPS接收机系统可以包括存储器,本地PRN代码生成器和内插器。该存储器可以用于存储从全球定位卫星接收的GPS PRN代码。本地PRN码生成器生成具有重复码的副本​​PRN码,该重复码至少包括第一时期和第二时期。内插器确定副本PRN码的第一时期中的偏移点,并以预定采样率对副本PRN码进行插值,以生成用于与GPS PRN码相关的内插副本PRN码。

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