Then the thesis analyzed noise ’ s influence on angle precise of simulated signal and gave some primary principles which should be followed in the system design 進(jìn)而分析噪聲對信號模擬角度精度的影響,提出了模擬器系統(tǒng)設(shè)計中應(yīng)遵循的一些基本準(zhǔn)則。
Finally we measured the performance of the system , analyzed phase error ’ s influence on angle precision of simulated signal and gave the solution 最后對模擬器系統(tǒng)的性能進(jìn)行了測試,分析了系統(tǒng)中相位誤差對信號模擬角度精度的影響,并給出了解決辦法。
From the simulation result , the serial port updating module are working normally . the simulated signal of illegal attack is defended while the background monitoring works effectively 通過測試結(jié)果,得出:機頂盒軟件串口升級運行正常;模擬對正常信號的非法攻擊得以屏蔽,后臺監(jiān)控正常。
Hardware controller uses the at89c51 monolithic integrated circuit , a / d transformation uses 12 bit transformations chips max187 , has completed the design of a front channel for sampling and processing the simulated signal 其中硬件單片機采用at89c51單片機, a / d轉(zhuǎn)換采用12位轉(zhuǎn)換芯片max187 ,完成了模擬信號從采樣到處理的整個前向通道設(shè)計。
In the practices , aacs can judge the existence of risk of collision by receiving ais simulated signals . if such a risk does exist , the aacs then acknowledges it , gives out alarming signals and transmits them through the ais 在實踐中,本系統(tǒng)通過模擬接收a舊信息數(shù)據(jù),并判斷是否存在碰撞危險;若存在危險,則判定危險物標(biāo),發(fā)出危險警告,并具有將危險警告信息通過a舊向外發(fā)送的功能。