介绍了基于伪码测距的某定位系统的设计方案，简要分析了伪码测距的原理，研究了用FPGA实现伪码的捕获与跟踪的方法。-Pseudo-code based on the introduction of a positioning system location design scheme, a brief analysis of the principle of pseudo-code ranging study using the FPGA realization of PN code acquisition and tracking method.