clock error

The emphasis is given on analysis to relationship of error sources to location accuracy on platform ephemeris, echo time delays, target elevation, Doppler center frequency and time clock etc.

着重分析了平台星历、回波时延、目标高度、多普勒中心频率和时钟等误差源与定位精度的关系。

Satellite clock and broadcast ephemeris error correction model were introduced briefly.

介绍目前广域差分星历误差及卫星钟差所使用的改正模型。

Clock Error Brings Error of the Solar Altitude

时钟误差对太阳高度推算误差的影响

When pulse mode is adopted for time correction, the clock error is less than 50 μ s.

而采用脉冲校时，可保证装置的校时误差小于50μs。

The dynamic errors are mainly timing error, clock jitter, finite output impedance, output variation effect and nonlinear switching transient.

动态误差主要有时序误差、时钟抖动、有限输出阻抗、输出波动效应、开关瞬态非线性等。

Owing to GPS clock, which has no accumulative error, and quartz oscillator, which is very stable, the time counting value is obtained without delay via hardware by combining high speed sampling and PPS ( Pulse Per-Second)-snapping.

利用GPS时钟无累计误差和高精度晶振频率稳定性高的特点，并将高速采样与秒脉冲捕捉有机结合，通过硬件方式无延时地捕捉秒脉冲以获取精确的时间计数值。

Analysis of Estimation Error in Atomic Clock Phase and Frequency

原子钟相位与频率估计的误差特性