- 偽隨機(jī)噪聲
- 偽噪聲
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pseudo noise中文什么意思
例句與用法
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- Pn pseudo noise
偽隨機(jī)噪聲 - We propose a new method of calculating the best threshold according to the characteristic of pn ( pseudo noise ) code
根據(jù)偽隨機(jī)碼的特性,提出了一種新的求取最佳檢測(cè)門(mén)限的方法。 - Secondly , we prove the self - relation function and correlation function of pseudo noise code sequence and obtain the shift register generating circuit from it ' s generating function
然后，通過(guò)偽碼的生成多項(xiàng)式，導(dǎo)出偽碼的移位寄存器生成電路，并分析了偽碼的自相關(guān)特性和互相關(guān)特性。 - We analyzed the anti - jam and band inside anti - interfere performance of the system , and the low probability intercept ( lpi ) of the traditional direct sequence spread spectrum ( dsss ) modulations in the uav platform ' s applications . so a new modulation technique using a multi - level pseudo noise ( pn ) code has been presented . the new multi - level pn code is built from a high speed pn code through a low passed filter ( lpf )
分析了系統(tǒng)抗阻塞式干擾和抗帶內(nèi)頻帶干擾的性能，以及常規(guī)bpsk qpsk - dsss調(diào)制在無(wú)人機(jī)通信中存在的安全隱患，提出了一種用多電平pn碼進(jìn)行擴(kuò)頻調(diào)制的方法：采用高速pn碼，經(jīng)過(guò)低通濾波器，產(chǎn)生多電平pn碼進(jìn)行直序擴(kuò)頻調(diào)制，能在低信噪比情況下有效抵抗平方率檢測(cè)器對(duì)系統(tǒng)載波的檢測(cè)。 - With the development of the electron and information technology , the blind de - spread of spread spectrum signals in non - cooperation communication has been a research hot spot . the blind detection and estimation of the chip rate and period of pseudo noise ( pn ) sequence are the precondition for the realization of blind de - spread
隨著電子戰(zhàn)和信息戰(zhàn)技術(shù)的發(fā)展,非合作通信條件下擴(kuò)頻信號(hào)盲解擴(kuò)成為擴(kuò)頻通信領(lǐng)域的研究熱點(diǎn),擴(kuò)頻信號(hào)pn碼速率和碼周期的盲檢測(cè)和盲估計(jì)是實(shí)現(xiàn)盲解擴(kuò)的前提。