CAJ | 학술논문

介绍了一种时间互同步算法的基本原理，并通过仿真试验分析了该算法在不同环境下的性能，指出其应用在地理覆盖范围较大的网络中的局限性。为改善该算法在实际应用场景中的性能，提出了一种基于传播时延修正的新策略。仿真结果表明，改进后的时间同步算法在传播时延不能忽略的场景中的性能远远优于原来的算法，其同步精度由原算法的1 ms左右提高到几微秒到几十微秒的量级，在实际工程中具有较高的应用价值。
개소료일충시간호동보산법적기본원리，병통과방진시험분석료해산법재불동배경하적성능，지출기응용재지리복개범위교대적망락중적국한성。위개선해산법재실제응용장경중적성능，제출료일충기우전파시연수정적신책략。방진결과표명，개진후적시간동보산법재전파시연불능홀략적장경중적성능원원우우원래적산법，기동보정도유원산법적1 ms좌우제고도궤미초도궤십미초적량급，재실제공정중구유교고적응용개치。
The elements of a mutual network algorithm are given. The performance of the algorithm is ana-lyzed empirically in different situations considering network node density,network geographic coverage,net-work dynamics and uncertainties. The degradation of the algorithm in performance is observed in situations where the propagation delay cannot be ignored. In order to improve the performance, a new strategy based on correcting the propagation delay is proposed. Simulation results show that the improved algorithm out-performs the original algorithm largely with respect to the synchronization error and the synchronization er-ror is reduced from about 1 millisecond to a few to tens of microseconds, which shows good prospect of the improved algorithm in practice.