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研制了一种高精度的通信卫星测距装置,它采用了数字式测音测距和放大微小传播时间计数的两种新方法。这个装置是一个高精度的卫星轨道观测装置,此外还能作为PCM——TDMA 卫星通信方式的初始目标截获系统,具有两种测量状态,一个是在没有进行 PCM——TDMA 通信时的目标截获状态,另一个是通信时的稳定测量状态。前一种状态的特点是在低信噪比条件下的高精度测量,后一种状态的特点是利用通信信号测量。分辨率为:距离分辨率1米或1毫微秒;径向速度分辨率:1厘米/秒或0.1毫微秒/秒。根据卫星实验证实本装置有上述各种功能,证明如使用本测量方式,则观测点和卫星之间的直线距离测量误差在30米以内。
A high-precision communication satellite ranging device was developed, which uses two new methods of digital sounding ranging and amplifying minute propagation time counts. This device is a highly accurate satellite orbiting observatory and can be used as an initial target acquisition system for PCM - TDMA satellite communication with two measurement states, one in target acquisition without PCM - TDMA communication , The other is a stable measurement state during communication. The former state is characterized by high-accuracy measurement at low signal-to-noise ratio, the latter state is characterized by the measurement of communication signals. Resolution: Distance resolution of 1 or 1 nanosecond; Radial speed resolution: 1 cm / sec or 0.1 ns / sec. According to the satellite experiment, it has been proved that the device has the above various functions and it proves that if the measurement method is used, the measurement error of the linear distance between the observation point and the satellite is within 30 meters.