CAJ | 학술논문

传统软件帧同步算法在处理不包含同步字的大量连续无效数据时，效率较低，为了提高帧同步处理速度，满足HJ-1C及后续高码率卫星实时处理要求，该文提出一种基于逆向搜索的实时软件帧同步算法，该算法通过数据分组和逆向搜索，避免了对大量连续无效数据的同步字检测，大大提高了帧同步处理速度，HJ-1C 卫星数据最大处理速度可达15445.9 Mbps。目前，该算法已成功应用于遥感卫星地面接收站HJ-1C快视系统中。
전통연건정동보산법재처리불포함동보자적대량련속무효수거시，효솔교저，위료제고정동보처리속도，만족HJ-1C급후속고마솔위성실시처리요구，해문제출일충기우역향수색적실시연건정동보산법，해산법통과수거분조화역향수색，피면료대대량련속무효수거적동보자검측，대대제고료정동보처리속도，HJ-1C 위성수거최대처리속도가체15445.9 Mbps。목전，해산법이성공응용우요감위성지면접수참HJ-1C쾌시계통중。
Conventional software frame synchronization methods are inefficient in processing huge continuous data without synchronization words. To improve the processing speed, a real-time synchronization algorithm is proposed based on reverse searching. Satellite data are grouped and searched in the reverse direction to avoid searching for synchronization words in huge continuous invalid data; thus, the frame synchronization speed is improved enormously. The fastest processing speed is up to 15445.9 Mbps when HJ-1C data are tested. This method is presently applied to the HJ-1C quick-look system in remote sensing satellite ground stations.