What is the purpose of the INS in an Airborne Survey?
空中勘测中INS的作用是什么？
An Inertial Measurement System (INS) allows for the successful positioning and orientating of the system during data capture by the Laser Scanner is essential to obtaining a precise final output.
The INS combines data from GNSS receivers and an Inertial Movement Unit (IMU) in order to form highly accurate estimates of the trajectory – commonly known as SBET (Smoothed Best Estimate of Trajectory).
Typically, this involves taking advantage of recent GNSS base station technology for differential processing.
惯性测量系统（INS）允许在激光扫描仪采集数据期间成功定位和定向系统，这对获得精确的最终输出至关重要。
INS结合了来自GNSS接收器和惯性运动单元（IMU）的数据，以形成高度精确的轨迹估计--通常被称为SBET（平滑的最佳轨迹估计）。
通常情况下，这涉及到利用最近的GNSS基站技术进行差分处理。