基于单轴光纤陀螺的单兵高精度寻北测角方法研究

Research on High Precision North Seeking Angle Measurement Method for Individual Soldier Based on Single-Axis Fiber Optic Gyroscope

光纤陀螺基于Sagnac效应测量角速度,其受外界环境的干扰很小且具有很好的自主性,因此,基于光纤陀螺的寻北测角系统在军事领域得到了一系列应用。为了满足单兵寻北测角的小型化、快速性的使用要求,研究了基于单轴光纤陀螺的单兵高精度寻北测角装置在倾斜摆放下的自动、快速寻北测角方法。在装置测量过程中可能存在干扰,进而影响寻北测角精度,通过研究装置在寻北测角过程中传感器的输出特征,并对干扰进行识别和处理,得到了高精度的寻北测角信息。最后通过试验对比和分析,验证了倾斜条件下干扰的识别与处理方法的有效性,满足单兵侦察时高精度寻北测角的需求。

The fiber optic gyroscopes measure angular velocity based on the Sagnac effect,which is less disturbed by the external environment and has good autonomy.Therefore,the north seeking angle measurement system based on fiber optic gyroscopes has been used in a series of applications in the military field.In this article,the fiber optic gyroscope realizes high-precision north-seeking angle measurement by sensitive to the angular velocity components of the earth’s rotation at four positions.In order to meet the requirements of miniaturization,rapidity of individual soldier’s north seeking angle measurement,this paper studies the automatic and fast north seeking method of the individual soldier’s high precision north seeking angle measurement device based on single-axis fiber optic gyroscope under tilt placement.There may be interference in the measurement process of the device,which affects the accuracy of north seeking angle measurement.By studying the output characteristics of the sensor in the process of north seeking angle measurement of the device,and identifying and processing the interference,the high precision north seeking angle information is obtained.Finally,through experimental comparison and analysis,the effectiveness of the identification and process of interference under tilted conditions is verified to meet the needs of high precision north seeking angle measurement for individual soldier reconnaissance.