摘要
从保精度和记录完整性2个方面对高轨道卫星型号任务倍密度磁记录器的带速设置问题进行了分析和探讨。阐述了磁头的基本工作原理,绘制了磁头的频率响应曲线,给出了缝隙损耗的计算公式,揭示了重放磁头的缝隙损耗是造成磁记录的频率响应范围受到限制的主要原因。根据带速、记录频率以及最佳记录波长的关系,计算了高轨卫星的最优带速设置并最终提出了带速设置的基本原则。
In this paper, speed setting of double density tape recorder for high orbit satellite measurement are analyzed and discussed from precision and integrality. The basic working principle of magnetic head is described, frequency response curve is given as gap-depletion expression, and gap-depletion is explained to be the main cause that the frequency response range of tape recorder is limited. At last, according to the relations between the tape speed, frequency and optimal wavelength, the optimal tape speed for high orbit satellite measurement is computed and the basic rule of tape speed setting is presented.
出处
《无线电工程》
2007年第2期56-57,共2页
Radio Engineering
关键词
磁记录
带速
记录波长
缝隙损耗
tape recorder
tape speed
recorder wavelength
gap-depletion
