The control hardware for real time dynamic image grabbing and grading was designed , and the facility used for synchronous tracking of fruits was also set up 課題完成了對(duì)動(dòng)態(tài)圖像采集和分級(jí)控制的硬件設(shè)計(jì),實(shí)現(xiàn)對(duì)水果實(shí)時(shí)位置信息的同步跟蹤。
In this paper , research on the algorithm of complete digital if and baseband transmission system and the realization of transmitter and receiver . / 4 - dqpsk is chosen as digital modulation scheme . the scheme of demodulation is baseband differential detection . sliding correlator can realize the symbol synchronous acquisition ; early - late gate synchronizer is used to do symbol synchronous tracking 系統(tǒng)的發(fā)射機(jī)選定/ 4 - dqpsk為調(diào)制方式,接收機(jī)采用基帶差分解調(diào)的非相干解調(diào)方式,滑動(dòng)相關(guān)器捕獲發(fā)送的pn序列,早遲門(mén)同步器跟蹤符號(hào)同步,使用相關(guān)器對(duì)同步后的符號(hào)進(jìn)行最佳判決,并在這些算法實(shí)現(xiàn)的基礎(chǔ)上,實(shí)現(xiàn)了直接序列擴(kuò)頻和解擴(kuò)技術(shù)。