Gyro Noise Measurements in a Family of Instruments

摘要

Noise data from a family of 8 gyros are presented with an explanation of how the data were obtained. The instruments tested were six Kearfott Alpha II and two Sperry SYG-1000 gyros. Spectral analysis of filtered, time domain data is used to provide power spectral density and integrated power spectral density plots of both rate and angle outputs. All data were taken with the gyros in the torque to balance mode, and the closed torquer loop response was adjusted in each case to be essentially flat to 15-25Hz. Each gyro was tested with IA, OA, and SA vertical and, in addition, wheel-off data are included for each position in which wheel-on data were obtained. The methods of data analysis and presentation are intended to facilitate comparisons among the gyros and aid in the separation of noise due to the gyro and its support electronics from that due to base motion. (Author)