Khz high pulse repetition frequency multibeam klystron transmitter 高重頻多注速調(diào)管發(fā)射機(jī)110
Range of pulse repetition frequency 脈沖重復(fù)頻率范圍
Pulse repetition frequency 脈沖重復(fù)頻率
Pulse repetition period 脈沖重復(fù)周期
Pulse repetition rate 脈沖重復(fù)頻率
High pulse repetition rate double - pass amplifier with the liquid phase conjugating mirror 液體相位共軛技術(shù)在高重復(fù)頻率雙程放大器中的應(yīng)用
Numerical and experimental results show that good angular superresolution and high estimation accuracy can be achieved provided that the radar pulse repetition time is small enough so that the echoes can be considered sufficiently correlated 結(jié)果表明,在雷達(dá)的脈沖重復(fù)周期同目標(biāo)的抖動(dòng)相比足夠小的情況下,相位權(quán)重法可以取得較好的方位分辨率和較高的測角精度。
The study in various switches with high voltage , high current , fast turn - on time , low jitter , low resistance , low inductance , low erode rate and being capable of steadily work with pulse repetition - rate , is currently a subject of growing interest 具有耐受高電壓強(qiáng)電流、擊穿時(shí)延短而分散小、電阻和電感小、電極燒損少以及能在重復(fù)脈沖下穩(wěn)定工作的各種類型的開關(guān)元件的研制,是當(dāng)前一個(gè)十分受重視的研究課題。
This paper ' s study is focused on the principle of bistatic sar on the basis of giving a brief introduction of sar principle , including azimuth resolution , mapping width , focusing deepness , pulse repetition frequency limitation and radar equation etc . then the paper studies the special form of bistatic sar with stationary transmitter 在簡要介紹了合成孔徑雷達(dá)的成像原理后,本文著重從原理方面對雙站sar進(jìn)行了分析,討論雙站sar的方位向分辨率,測繪帶寬,聚焦深度,脈沖重復(fù)頻率限制,雷達(dá)方程等問題,然后對發(fā)射機(jī)固定的雙站sar這種特殊的雙站sar模式進(jìn)行分析。
Synthesized signals with different pulse repetition frequencies ( prf ) and main vibration frequencies ( mvf ) were presented to the brown planthopper . the results showed that prf was a sensitive and important signal characteristic in mating choice . the prf and mvf sensitive ranges of male signals were 70 ~ 90hz , 200 ~ 1700hz separately , and of female signals were about 22hz , 100 ~ 300hz separately 雄蟲敏感的prf范圍在22hz左右,雌蟲敏感的paf范圍為70 90hz ,這與實(shí)際的雌、雄蟲求偶鳴聲的pm變化范圍是一致的;雌、雄蟲能對mvf變化范圍較大的信號(hào)敏感,雄蟲敏感的mvf范圍為100 300hz ,與雌蟲求偶嗚聲的mvf變化范圍是一致的,而雌蟲敏感的mvf范圍為200 1700hz ,要比實(shí)際的雄蟲求偶鳴聲的mvf變化范圍大的多。