frequency discrimination 中文意思是什麼

frequency discrimination 解釋
鑒頻
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  • discrimination : n. 1. 辨別，區別，鑒別。2. 辨別力，識別力，鑒賞力，眼力。3. 不公平的待遇，差別對待，歧視，排斥。n. -nator 1. 辨別者。 2. 歧視者。 3. 【無線電】鑒頻器。
  1. This paper mainly discusses the vital part discrimination of the near - field target by using target acoustic imaging method, which uses dense narrow beams based on high frequency system

    本論文主要研究了基於高頻體制下利用密集窄波束形成目標圖像，進行近場目標精確識別。
  2. For digital audio encoding and decoding modules, delta - sigma modulation is introduced and audio data, preambles with accessorial data are multiplexed according to the digital audio interface standard ; for carrier wave, pll frequency synthesizer is used ; for frequency modulation, voltage control oscillator is taken ; for demodulation, pll frequency discrimination is adopted

    調制方式，並按照數字音頻介面標準對音頻數據、同步字和附加信息進行通道復用;對于載波信號，採取鎖相環頻率合成技術手段;對于頻率調制，採用壓控振蕩器;對于解調電路，採取鎖相環鑒頻電路。
  3. An algorithm of digital frequency discrimination based on distributed arithmetic

    一種基於分散式演算法的數字鑒頻方法
  4. The method can measure the following parameters, ( pulse attitude ) pa, ( pulse width ) pw, ( time of approach ) toa, snr, ( radio frequency ) rf, pulse envelope characteristic parameters and intra - pulse modulation parameters with a high precision and a high discrimination

    該演算法能夠分析雷達信號的脈沖脈幅、脈寬、到達時間、信噪比、載頻、脈沖包絡特徵參數和脈內調制特徵參數。
  5. On the basis of analyzing the old system and theory, the element circuits of wireless digital audio transceiver modules are designed in detail including the digital audio encoding and decoding circuits with the surrounding circuits, the fsk circuit based on pll frequency synthesizer, the power amplifier circuit, the frequency discrimination and agc circuit

    在分析原系統結構和理論的基礎上，完成了整個無線數字音頻傳輸模塊各單元電路的設計。主要包括有數字音頻編碼和解碼電路及外圍電路的設計、基於鎖相頻率合成器理論的fsk電路設計、功率放大器的設計、鑒頻與agc控制電路的設計。
  6. The essential requirements for the frequency synthesizer are : 1 ). low side band power 2 ). high hopping speed 3 ). short convergence time direct digital synthesis technology has the advantages of low cost, low power consumption, high frequency discrimination and short switching time

    直接數字合成技術dds具有低成本、低功耗、高解析度和快速轉換時間等優點，是實現快速跳頻的一個關鍵技術。本文討論了如何實現高速的跳頻系統。
  7. Because of the structure of the traditional polarization diversity and combining scheme is too complex, after researching the polarization diversity and diversity combining technology, a new structure of receiver is proposed. in this structure the uniform sampling second - order dpll is used to remove the frequency bias after frequency discrimination

    該結構控制較為復雜，為此結合實際項目要求，在研究了極化分集接收關鍵技術的基礎上，提出了一種改進的極化分集接收機結構，即在鑒頻之後利用均勻采樣二階數字鎖相環誤差傳遞函數的高通特性去除各種頻偏分量。
  8. Spatial frequency discrimination

    空間頻率?別
  9. The experience results indicated the reliability of this kind of thermostatic control system. the analysis and compare about modern dielectric loss measuring methods are presented on chapter 3, and the zero - crossing testing phase discrimination method is adapted as the measuring method of this measuring system. furthermore, applied high frequency pulse technique, channel self - correction technique, anti - harmonic technique are used to increase accuracy and reliability of measurement

    本文對現代介質損耗測量技術進行了分析與比較，採用過零鑒相比較法作為介質損耗測量方法，並結合外施高頻脈沖技術、通道自校正技術、抗諧波技術，設計了高精度介質損耗測量電路，有效提高了介質損耗測量的精度，減小了測量誤差。
  10. Analytic technique of frequency difference for discrimination of cavity fillers

    溶洞充填物判識的頻率差異分析技術
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