基于信号嫁接技术的IMU导航性能评估方法

为了探究新型惯性测量单元（ IMU）的导航定位精度以便选用，需要对其进行方便有效和低成本的测试评估。对一种新颖的基于信号嫁接技术的IMU导航性能评估方法进行了验证和分析。以三种中低精度IMU为样本，将该方法的评估结果与该IMU的现场测试结果对比，从而对该方法的评估效果进行验证。结果表明：相对于IMU的仿真评估，使用信号嫁接技术合成出的IMU数据在导航性能上与现场测试结果有更高的一致性，更为有效和可信。该方法相比于权威的现场测试评估具有成本低、效率高的独特优势，在中低精度惯性器件性能评估上具有很高的应用价值。

IMU navigation performance evaluation method based on signal grafting technology

In order to evaluate navigation performance of inertial measurement unit( IMU),convenient,efficient and low-cost evaluation methods are needed. A new method based on signal grafting is verified and analyzed,to evaluate the navigation performance of IMU. Three kinds of medium and low precision IMUs are used as samples, to check the evaluation effectiveness of the proposed method,the evaluation results using this method are compared with their actual road test results. Experimental results show that the navigation performances of the grafted IMU data matched much better with that of the real IMU data compared with the simulation IMU data. The proposed signal grafting method is not only reliable and feasible,but also low-cost and efficient,therefore,it has high application value in IMU performance evaluation of medium and low precision.