According to P-code features of large Doppler frequency shift and long code period, the method that shortens the scope of carrier frequency search is studied.
针对P码多普勒频移大、周期长的特点，本文探讨了缩短载频搜索范围的方法。
A name declared local to a function hides the same name declared in the global scope (Section 2.3.6, p. 54).
在函数中局部声明的名字将屏蔽在全局作用域(第2.3.6节)内声明的同名名字。
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