基于轨迹发生器的捷联惯导算法仿真研究

Simulation research on the strap-down inertial navigation algorithm based on trajectory generator

为了克服基于半实物的捷联惯导算法仿真研究容易受到各种干扰因素影响的缺陷,更好检验仿真性能,提出一种基于轨迹发生器的捷联惯导算法仿真研究方法。通过给出系统结构图,根据任务要求设计出载体的轨迹发生器,从而获得惯性器件和载体导航参数的输出,进而通过捷联惯导解算得出的解算数据与轨迹发生器的输出数据对比,获得载体输出误差数据。最后,对轨迹发生器和误差数据进行Matlab仿真验证,实验结果表明了该方法的正确性和有效性,达到了检验捷联惯导仿真性能的目的,具有一定工程实际意义。

In order to overcome the shortcomings that the strapdown inertial navigation algorithm easily affected by various factors interference based on hardware-in-the-loop simulation,and to test the simulation performance better,an approach was presented based on a trajectory generator for strapdown inertial navigation algorithm simulation. Through a system architecture diagram,a vector trajectory generator was designed according to task requirements. Thereby,the inertial device and the output of vectors navigation parameters were attained. By comparing the solution data calculated by strapdown inertial navigation with the output data of the trajectory generator,the error data of carrier output was obtained. The trajectory generator and error data were simulated by Matlab,and the results show that the method is correct and effective; that the purpose of the performance test of the strapdown inertial navigation simulation is achieved; and that the method also has a certain practical significance.