| The technology of time interval measurement plays an indispensable role in the fields of atomic physics, localization & timing systems, spaceflight telemetry and telecontrol and military technologies. The paper mainly probes into the methods of time measurement and time service, as well as time synchronization technology. A standard time interval measuring instrument that is provided with high-precision, wide range, stable and reliable testing performance is developed.The thesis is composed of seven chapters as following:Chapter 1 sums up the current status and developments of the time measurement and the time synchronization technology, the objects and tasks of this paper are also put forward according to the requirements of the standard time interval measuring instrument.Chapter 2 elaborates the integral design scheme of the standard time interval measuring instrument by strictly analyzing the research object and relative key techniques.Chapter 3 elaborates the way to acquire high-precision and wide-range time interval measuring instrument, the difficulties we will meet and how to solve them during the realization are also discussed in detail.Chapter 4 introduces the software development of the measuring system; mainly include the codes of DSP and USB, and the software development of the user application interface.Chapter 5 introduces the testing solutions of the standard measuring instrument, some analyses based on the experimental data and experimental results are processed.Chapter 6 sums up and expects for the research in the thesis.Innovation of the paper can be summed to the aspects as following:1) The way to achieve high-precision, high-resolution, wide-range time measuring: Integrating theory of pulse counting and qualified time interval.2) Software compensation to the difference of the pulse transmission time in different cable, electronic components and circuit channels eliminates the non-symmetry of the transmission delay time and reduces the measuring error obviously.
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