OceanGate's Titan submersible carries a state-of-the-art self-contained inertial navigation system which it combines with an acoustic sensor known as a Doppler Velocity Log to estimate the depth and speed of the vehicle relative to the sea floor.

海洋之门公司的泰坦携带了最先进的独立惯性导航系统，它结合了被称为多普勒速度日志的声学传感，以估相对于海底的深度和速度。

Submersible pilots also rely upon a technique known as inertial navigation, using a system of accelerometers and gyroscopes to track their position and orientation in relation to a known starting point and velocity.

飞行员还依靠种被称为惯性导航的技术，使由加速度和陀螺仪组成的系统来跟踪他们与已知起点和速度相关的位置和方向。

If these were impractical for a particular target was an exquisite piece of technology called an inertial navigation system.

如果这些对于特定目标不切实际的话，那就有种被称为惯性导航系统的精妙技术。