全球定位系统
全毬定位繫統
전구정위계통
GPS WORLD OF CHINA
2015年
2期
88-91
,共4页
史丰丰%程梦飞%李博%王磊
史豐豐%程夢飛%李博%王磊
사봉봉%정몽비%리박%왕뢰
激光时间比对%时差测量仪%门控%下传速率
激光時間比對%時差測量儀%門控%下傳速率
격광시간비대%시차측량의%문공%하전속솔
Laser time comparison%time difference measuring instrument%gate control technology%data passing-dow n rate
星载时差测量仪是实现激光星地精密时差测量的关键设备，其采集数据总有效率的高低决定激光星地时间同步精度。但由于激光技术的数据采集率受天气及背景噪声影响较大，为提高时差测量仪的探测能力，降低大背景噪声对数据总有效率的影响，分别应用门控技术[1]和调整下传速率两种策略针对激光时差测量仪进行实验。实验结果：在大背景噪声条件下可以提高时差测量仪数据总有效率20％以上。
星載時差測量儀是實現激光星地精密時差測量的關鍵設備，其採集數據總有效率的高低決定激光星地時間同步精度。但由于激光技術的數據採集率受天氣及揹景譟聲影響較大，為提高時差測量儀的探測能力，降低大揹景譟聲對數據總有效率的影響，分彆應用門控技術[1]和調整下傳速率兩種策略針對激光時差測量儀進行實驗。實驗結果：在大揹景譟聲條件下可以提高時差測量儀數據總有效率20％以上。
성재시차측량의시실현격광성지정밀시차측량적관건설비，기채집수거총유효솔적고저결정격광성지시간동보정도。단유우격광기술적수거채집솔수천기급배경조성영향교대，위제고시차측량의적탐측능력，강저대배경조성대수거총유효솔적영향，분별응용문공기술[1]화조정하전속솔량충책략침대격광시차측량의진행실험。실험결과：재대배경조성조건하가이제고시차측량의수거총유효솔20％이상。
Onboard time difference measurer is the key equipment to realize the precise time measurement between satellite and the earth by laser ,and its efficiency determines the precision of time synchronization .However ,due to the efficiency of data acquisition by laser was affected by the weather and the background noise ,the two methods of threshold control and transmission rate adjustment have been experimented in order to improve the detection a‐bility and reduces the influence of background noise .The results show that they can im‐provement the efficiency of 20% above in the condition of large background noise .
