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intermediate frequency 【無線電】中頻。

intermediate host

In the digital intermediate frequency project , the intermediate frequency signal is converted to digital signal directly into the dsp chip , then it is be processed by dft 數字中頻方案將中頻信號直接通過a / d轉換后送入dsp芯片進行dft變換,最后得到待測信號頻譜的采樣序列。

Exposure to electric or magnetic fields in the low and intermediate frequency range - methods for calculating the current density and internal electric field induced in the human body - general 曝露于低頻和中頻電場或磁場.人體內感應的電流密度和內電場的計算方法.總則

The main tasks in this thesis focus on intermediate frequency digitized technology for tdrss user transponders , which is a part of the novel technology research of transponders 本論文所研究的課題是tdrss用戶應答機中頻數字化技術,是“應答機新技術研究”的一部分。

Having the property of good image rejection in broadband and low intermediate frequency ( if ) cases , the image - rejected mixers ( irm ) have been widely used in various mmw receivers 而鏡頻抑制混頻器能夠在寬帶、低中頻的情況下實現良好的鏡頻抑制。

The de - hopping and digital intermediate frequency receiver can either do the real - time de - hopping processing or be used as a software radio receiver 需要實現的跳頻解跳與數字中頻接收機既能對跳頻信號進行實時解跳,又能做為一臺軟件無線電接收機使用。

Finally the fruit of research for my master degree presents in the way of actual de - hopping and digital intermediate frequency receivers that have passed the examination 最終以通過檢測的跳頻解跳與數字中頻接收機的實物作為碩士期間的研究成果呈現。

Two projects to produce it are described in detail in this paper , which are analog intermediate frequency project and digital intermediate frequency 本文詳細介紹和分析了模擬中頻和數字中頻兩種場強儀實現方案,對于同類產品的研究有很大的參考價值。

This scheme can also adapt ds / dmpsk modulation and demodulation with different base data rate , different pseudo random codes and different intermediate frequency 該方案可以適應不同基帶數據速率、不同偽隨機碼和不同中頻的ds / dmpsk的調制和解調。

5 . the application of the system into broken - down signal - detected project of intermediate frequency switch electrical source and getting the satisfied achievement 將該系統應用于中頻開關電源的故障信號檢測項目中,并取得了很好的效果。

Purpose : the equipment is used for mensurating corrosion resistance of blast furnace refractories to molten slag by means of heating of intermediate frequency influence 用途:該設備用中頻感應加熱的方法模擬測試耐火材料抗渣蝕性能。

This thesis introduces the design process of intermediate frequency ( if ) digital receiver used in space spectrum radio supervising and measuring system 本文介紹了應用于某空間譜無線電監測與測向系統中的中頻數字接收機的設計過程。

Application : this series can be widely used in the communication systems of intermediate frequency for improving selectivity and anti - jamming capacity of signals 用途:可廣泛應用于中頻通訊系統中,提高信號的選擇性和抗干擾能力。

3 . accomplished the hardware design of intermediate frequency signal processing 4 . accomplished the software design of intermediate frequency signal processing 3 .完成了中頻信號處理的硬件設計。 4 .完成了中頻信號處理的軟件設計。

The fpga and dsp architecture has been used in the digital correlator , by which the spread spectrum signal can be demodulated at the intermediate frequency 數字相關器采用fpga + dsp的結構設計,實現了擴頻信號在中頻的解擴解調。

In the subsystem of the receiver , to get i q two - channel digital signal , return signal was perpendicular sampled at intermediate frequency 在接收機子系統中,采用了中頻直接正交采樣來完成對信號的i 、 q雙通道的分離。

Sectional specification for high - frequency inductors and intermediate frequency transformers for use in electronic equipment for capability approval 按能力批準評定質量的電子設備用高頻電感器和中頻變壓器分規范

Abstract : the paper analyses the principle , adjusting and c ommon fault removing of intermediate frequency power supply with novoltage start ing 文摘:分析了零壓啟動式中頻電源的原理、調試及常見故障排除。

In signal processing , second - generation enhanced intermediate frequency sampling speed and signal processing speed and capacity 在信號處理方面,第二代提高了中頻采樣速度,并加強了信號處理的速度和能力。

In the paper , the emphasis is placed on the discussion of the algorithm of design and simulation of digital intermediate frequency system 本文主要研究了數字中頻系統中的信號處理、設計及其仿真方法。