CAJ | 학술논문

针对CCD( Charge Coupled Device)相机在探测脉冲激光光斑过程中曝光时刻与脉冲激光同步的问题，提出一种利用超前预测方式同步触发CCD相机抓拍光斑图像的高精度时钟源设计方案。该装置主要采用北斗2导航系统( BD2：BeiDou2 navigation satellite system)/全球定位系统( GPS：Global Positioning System)，双模接收单元提供的协调世界时( UTC：Universal Time Coordinated)时间以及高精度秒脉冲( PPS： One-Pulse Per Second)时间基准作为同步时钟装置的基准源，并结合现场可编程门阵列( FPGA：Field-Programmable Gate Array)高速时序计算与微控制单元接口技术，保证CCD相机同步抓拍时间，从而完成高精度的同步触发。实验表明，该装置可以提供微秒级时间同步精度和标准授时信息，有效地缩短了CCD相机曝光时间，得到完整清晰的高信噪比脉冲激光光斑图像。
침대CCD( Charge Coupled Device)상궤재탐측맥충격광광반과정중폭광시각여맥충격광동보적문제，제출일충이용초전예측방식동보촉발CCD상궤조박광반도상적고정도시종원설계방안。해장치주요채용북두2도항계통( BD2：BeiDou2 navigation satellite system)/전구정위계통( GPS：Global Positioning System)，쌍모접수단원제공적협조세계시( UTC：Universal Time Coordinated)시간이급고정도초맥충( PPS： One-Pulse Per Second)시간기준작위동보시종장치적기준원，병결합현장가편정문진렬( FPGA：Field-Programmable Gate Array)고속시서계산여미공제단원접구기술，보증CCD상궤동보조박시간，종이완성고정도적동보촉발。실험표명，해장치가이제공미초급시간동보정도화표준수시신식，유효지축단료CCD상궤폭광시간，득도완정청석적고신조비맥충격광광반도상。
To deal with the problems of time and pulse lager synchronization in the process of CCD ( Charge Coupled Device) camera capturing laser spot images, an advanced forecasting method to trigger CCD camera synchronously to capture images of high-precision clock source is proposed. This device used the UTC( Universal Time Coordinated ) and high-precision PPS ( one-Pulse Per Second ) as synchronous clock reference source provided by BD2 ( BeiDou2 navigation satellite system)/GPS ( Global Positioning System) dual-mode receiving unit . Ensured the synchronization capture time of the CCD camera in combination with high-speed FPGA ( Field-Programmable Gate Array ) computing and microprocessor interface timing technology, thus accomplished the synchronization trigger action. The experiment shows that this device can provide microsecond level synchronization accuracy and standard timing information, shorten the exposure time of the CCD camera effectively, get a complete clear pulse laser spot image with a higher SNR( Signal-to-Noise Ratio) .