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对两个相同的经过宇宙空间考验的液浮速率积分型陀螺(Ferranti公司125型)进行了噪声测量,这种陀螺采用可选择回路带宽的模拟再平衡回路技术,在典型的宇宙空间条件下工作。感兴趣的噪声频率范围为0.005至50赫。噪声信息被处理成一组统计参数(平均值,标准偏差,幅值范围,斜率和频率分布图)。此外,通过快速傅里叶变换,自-互功率谱与自-互协方差函数也一起确定出来。利用传递函数多项式,从闭路信息中计算出陀螺等效开路功率谱,并与直接测得的开路功率谱进行了比较。本文从这些结果中选出一部分加以介绍。
Noise measurements were performed on two identical space-proven, liquid-floated integral gyros (Ferranti Model 125) that operate in typical space conditions using simulated rebalance circuit technology with selectable loop bandwidth . Noise frequencies of interest range from 0.005 to 50 Hz. Noise information is processed into a set of statistical parameters (mean, standard deviation, amplitude range, slope and frequency distribution). In addition, self-mutual power spectra and autocorrelation covariance functions are also determined by Fast Fourier Transform. Using the transfer function polynomial, the gyro-equivalent open-circuit power spectrum is calculated from the closed-circuit information and compared with the directly measured open-circuit power spectrum. This article presents a selection of some of these results.