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美国空军武器系统需要高度精密的方位基准,为此研制了自动方位测量系统。该系统代表了既可在实验室又可在野外专门环境中使用的高精度全天候自动方位测量系统当前的发展水平。它由两个惯性传感器,一个角度传递系统,一组倾斜仪和一台微处理机组成。惯性传感器利用安装在常平架上的速率陀螺罗盘指示出两个传递反光镜相对于真北的方位角。依靠精密分度台上的自准直仪将方位角传递到几个反射镜上去,瞄准管沿每个光路输送低速气流。使用高度灵敏的倾斜仪来测量和修正因惯性传感器基座运动引起的误差。数据处理和功能操作由微处理机控制。这套仪器曾用在民兵导弹工程试验井内监视导弹的方位运功。最近的结果表明,一次观测的标准偏差为2.1弧秒。已提出的改进措施包括改进辅助电子线路,改进陀螺罗盘倾斜测量方法,提高自动化水平和扩充信号处理用的软件。
The United States Air Force weapons system requires a highly accurate azimuth datum, for which an automatic bearing measurement system has been developed. The system represents the current state of the art in high-precision all-weather automatic position measurement systems that can be used both in the laboratory and in the field. It consists of two inertial sensors, an angle transmission system, a set of inclinometers and a microprocessor. The inertial sensor uses the rate gyro compass mounted on the gimbal to indicate the azimuth of the two transmitting mirrors relative to true North. Rely on the autocollimator on the precision index stage to transmit the azimuth to several mirrors, aiming the tube to deliver low-velocity airflow along each optical path. Use a highly sensitive inclinometer to measure and correct errors caused by inertial sensor base motion. Data processing and functional operations are controlled by the microprocessor. This instrument has been used in the Militia missile engineering test well to monitor the missile’s position and function. Recent results show that the standard deviation of an observation is 2.1 arc seconds. Improvements that have been made include improvements to auxiliary electronics, improved methods of measuring gyroscope tilt, software to increase automation and augment signal processing.