signal to jamming ratio 中文意思是什麼
signal to jamming ratio
解釋
信噪比-
And more, a computer simulation has been made and the results indicate the validity of part time - resident interference under the certain ratio of jamming - to - signal time - resident, consequently, it may provide concerned methods for countermining fh communication systems
進一步進行了模擬與分析，結果表明在一定干信駐留時間比情況下，部分駐留時間干擾的有效性，從而為針對跳頻通信系統進行對抗提供相關方法。 -
When blanket jamming is used, the more the ratio between the power of jamming and the power of signal, the less detection probability of the radar is. the effect of distributed jamming mainly depends on the total power. after distributed, the randomicity of distance and phase of jamming source bring difficulties to analysis
對壓制式干擾來講，干信比越大，雷達的發現目標的概率就越小，由於分散式干擾的干擾效能在於其合成功率，在分散式干擾單元分佈之後，各個干擾源與被干擾對象之間的距離的不確定性，帶來了干擾信號相位的不確定性，增加了分析干擾效能的復雜度。 -
We also analyze the influence of the boundary condition 、 safety distance and deceleration probability to the traffic flow. finally, we propose an crossroad modle. this model is made up of one main road and one branches ： traffic with lights placed on the crossing, vehicles " breaking while running and turning to other direction while jamming. we investigate the velocity and flow of the model when the initial density, the brake and turning probabilities, the green to signal ratio are changed. then the reasons causing all the kinds of phenomena are analyzed
最後研究了周期性邊界條件下的十字路口的ca模型，該模型由一條主幹道和一條支道組成，在幹道與支道的交叉路口設置紅綠燈，車輛在運行中對突發事件發生反應的剎車，路口的車輛可以轉向等各種實際交通行為，並通過計算機模擬，研究模型在改變車輛的初始密度、剎車概率、轉向概率、紅綠燈信號的綠信比等各種情況下支、主幹道車輛的速度、流量的變化，並分析在各種情況下交通狀況的成因，提出改善交通的有效措施。 -
The solution can greatly upgrade the anti - jamming ( especially white noise ) ability of fh system. according to the ratio of noise power to signal power, the length of code can be selected to guarantee the normal communication
該方案能有效的提高跳頻系統對抗白噪聲的能力，根據干擾相對于信號的強度，採用適當長的碼，跳頻系統將總能正常運行。 -
The direct sequence spread spectrum ( dsss ) signal has been widely used, owing to the ability of lower working signal - to - noise ratio ( snr ), strong anti - jamming, lower probability interception and mitigating the effects of multi - path fading
直接序列擴頻（ dsss ）信號由於具有工作信噪比低、強抗干擾性、低截獲率、能夠抑制多徑效應等優點，已經得到廣泛應用。 -
First, author studies oppressive jamming technology of sar based on its system gain, analyses its fundamental theory and jamming mechanism, programs an integral simulation software which produces noise data of several kinds, at the same time carries out many simulation experiments under different noise - to - signal ratio of each noise type, then makes in - depth analysis and comparison on those images resulting from simulation experiments and summarizes some conclusions of theoretical and practical value
作者首先在分析合成孔徑雷達系統增益的基礎上研究了壓制性干擾技術，分析其基本原理及干擾機制，編制了一個完整的干擾模擬軟體，產生多種類型的噪聲數據，針對每種噪聲類型又調整其噪信比進行了大量的模擬實驗，然後對實驗的結果圖像進行了深入的分析、比較，總結出了具有一定理論和實用價值的結論。
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