多通道捷联惯组数据采集系统

作为惯性导航的重要组件，惯性器件通常由陀螺仪和加速度计组成．为完成对其性能的评价，需要研制专门的数据采集系统来实现对其的测试工作．传统的惯组数据采集由于体积庞大，技术更新困难，可靠性差等方面的原因，越来越难于满足当前的测试需要．随着FPGA技术的快速发展，使得惯组数据采集系统越来越小型化和简单化．通过选用XILINX公司的XC3S1000—4FT256I芯片，实现了将惯组输出的陀螺仪脉冲信号、加速度计脉冲信号和温度传感器信号直接输入给FPGA进行处理，完成了脉冲数据的采集．经过在两轴转台上的实际应用，通过对大量测试数据的比对与分析，发现用本系统测试的惯组数据，其稳定性指标与传统方法相比，提高了近1σ．

Multi-Channel Strap-Down Inertial Navigation of Data Acquisition System

As an important component of the inertial navigation, inertial device is usually composed of gyroscopes and accelerometers. To complete the evaluation of its performance, it is needed to develop a specialized data acquisition system. The traditional set of data collection is becoming more and more difficult to meet the test needs due to the huge volume, technology updated difficulties, and poor reliability. With the rapid development of FPGA technology, the IMU data acquisition system is smaller and more simple. Through the XC3S1000-4FT256I chip of XILINX, the gyroscope, accelerometer IMU output pulse signal of pulse signal and a temperature sensor signal input directly to FPGA for processing, the pulse data collection, through the practical application in the two axis turntable. By comparing a large amount of test data and analysis, we found that the stability of the IMU data increased nearly 1 sigma, compared with the traditional method.