The inertial sensors of the strapdown inertial navigation system are directly mounted to the vehicle. Unlike platform inertial navigation system, special problems will occur when the software is considered in SINS.
捷联惯性导航系统的惯性器件直接固联在载体上，这就给捷联系统的软件设计提出了有别于平台惯性导航系统的特殊问题。
参考来源 - 捷联惯性导航算法及半实物仿真系统研究The inertial sensors (gyros and accelerometers) of the strapdown inertial navigation system (SINS) are directly mounted to the vehicle. Unlike platform inertial navigation system, special problems will occur when the software and the hardware are considered in SINS.
捷联惯导系统(SINS)的惯性器件(陀螺仪和加速度计)直接固联在载体上，这就给捷联系统的软、硬件设计提出了有别于平台惯导系统的特殊问题。
参考来源 - 捷联惯导算法及车载组合导航系统研究Secondly, the principle and composition of the strapdown system is discussed. The strapdown system is the appropriate for the rocket system by calculating and analyzing.
其次，讨论了垂直发射用捷联惯导系统的原理和组成，建立了计算机仿真计算模型，通过仿真计算确定了系统参数对捷联系统总体性能的影响。
参考来源 - 制导火箭弹制导系统总体设计与仿真·2,447,543篇论文数据，部分数据来源于NoteExpress
介绍了四元数法的基本原理及其在捷联系统中的用法；
The basic theory and the usage of quaternion are also been introduced.
分析了调制型捷联系统的误差特性并建立了四位置转位方案模型。
The error characters of rotary SINS are analyzed and the model of four-position indexing scheme is established.
此方法对平台系统或位置捷联系统的误差分离具有较重要的参考价值。
These methods are very helpful to error separation of inertial platform systems or Position Strap-down systems.
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