惯导平台的漂移是影响惯性导航精度的主要原因。
初始对准是惯性导航系统的关键技术之一，它直接影响惯导系统的导航性能。
Initial alignment is a key technique of INS, which plays an important role in the performance of navigation system.
惯性导航定位系统分为平台式惯导系统和捷联式惯导系统两种。
Inertial navigation system is composed of strap down inertial navigation system and platform inertial navigation system.
本文提出一种把平台式和捷联式惯导系统结合在一起的新的惯性导航系统。
A new type of inertial navigation system combining customary platform type with strap-down one is put forward.
因而研究新的重力补偿方案，提高惯性导航定位精度，对于扩大惯导系统的应用领域有极大的意义。
To improve the accuracy of INS, a new gravity compensation method should be studied. It is significative to expand the application of INS.
惯性元件误差是捷联惯导系统的主要误差源，必须在导航过程中加以补偿。
As the main error source of SINS, the errors of inertial instrument must be compensated.
惯性元件误差是捷联惯导系统的主要误差源，必须在导航过程中加以补偿。
As the main error source of SINS, the errors of inertial instrument must be compensated.
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