接收靈敏度 的英文怎麼說
中文拼音 [jiēshōulíngmǐndù]
接收靈敏度
英文
receiving sensitivity- 接 : Ⅰ動詞1 (靠近;接觸) come into contact with; come close to 2 (連接; 使連接) connect; join; put ...
- 收 : Ⅰ動詞1 (把攤開的或分散的事物聚集、合攏) put away; take in 2 (收取) collect 3 (收割) harvest...
- 靈 : Ⅰ形容詞1 (靈活; 靈巧) quick; clever; bright 2 (靈驗) effective Ⅱ名詞1 (精神; 靈魂) spirit; ...
- 敏 : Ⅰ形容詞(靈敏;敏捷) quick; agile; smart; nimble Ⅱ名詞(姓氏) a surname
- 度 : 度動詞[書面語] (推測; 估計) surmise; estimate
- 接收 : 1 (收受) receive; reception; accept; [電學] receipt; receiving 2 (接管) take over; expropriat...
- 靈敏度 : [電子學] sensitivity; response rate; sensibility; sensitiveness; response; susceptibility; suscep...
- 靈敏 : sensitive; keen; quick; agile; acute
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Intermodulation suppression for fh ( frequency hopping ) receiver is designed by selecting the intermediate frequencies and changing group of filters, local oscillation ( lo ) frequency, bandwidth of lo frequency under the condition that receiver configuration, sensitivity, dynamic range, instantaneous bandwidth and precision of frequency measurement are fixed
摘要針對跳頻接收機的體制和靈敏度、動態范圍、瞬時工作帶寬、測頻精度等設計參數,通過改變預選器組成、本振頻率和本振帶寬,分析接收通道的中頻選取原則,以實現跳頻接收機的互調抑制設計。Symptom : no, or very low rx sensitivity
沒有或者說非常低的接收靈敏度。In this thesis, wide - fov ( field - of - view ) optical systems with optical gain based on fov and optical gain of laser detection and warning optical system are studied. it can solve the problem of wide fov matching with small photosensitive surface, enhance the power received, increase detecting sensitivity, reduce the power of laser and decrease the cost of laser accordingly
本文正是針對上述問題,從激光輻射探測光學系統的視場和光學增益出發,研究寬視場有增益光學系統,解決大視場和小光敏面匹配的矛盾,增強接收到的光功率,提高探測靈敏度,降低對激光輻射源功率的要求,從而降低相應激光器的成本。The multi - beam receiver is the most recent addition to this exclusive club, and it provides seti scientists with a level of sensitivity that could never be achieved with the line feed antenna
多波束接收器是其中最新的一個成員,它將為seti的科學家提供使用線反饋天線所永遠無法企及的靈敏度。Then we introduce the character of the atmosphere channel, which we emphasized on the atmosphere scatter, absorption and scintillation ' s effect on the laser beam. in chapter, we explain why we used cassegrain telescope to collect the optical signal at first, then the lightsource, detector, front amplifier used in optical communication has been compared to that of fiber communication, the noise including shot noise, thermal noise and background light noise has been explained here for analysis the snr and ber in the next section
在第三章介紹無線光接入系統的光收發單元,採用多孔徑卡塞格倫式的收發天線對消除減小大氣湍流影響有較大作用,針對大氣通道的特點無線光系統收發單元在光源、光探測器、前置放大電路上存在許多有別于光纖通信的技術,同時還闡述了光接收機包括背景噪聲的噪聲機制和接收靈敏度、誤碼率等指標,最後給出了一個整個傳送鏈路的功率預算。Ingenious circuits can be designed that correct for changes in the receiver sensitivity.
設計靈敏的電路,以便校正接收機靈敏度的變化。To construct and analysis the ttd demo module, the mems devices substitute for the former electric devices, then succeed to obtain the rf mems front - end r / t system which can communicate with each other
最後,用mems器件代替傳統電子器件,成功建立1 . 88ghzpcb級rfmems前端收/發模塊,達到了合理的發射功率和接收靈敏度,成功收發信號。The performance targets of acquisition and tracking : the code rate of pseudorandom signals is 1m - 5mhz, the code length is 255. 511, the receiving sensitivity is - 118dbm, the dynamic range is 70db. the doppler of carrier is 75khz, the time that 10 targets are captured within 0. 2s
捕獲和跟蹤的性能指標:偽隨機信號碼率1m 5m比特/秒,碼長是255 、 511 ,接收靈敏度是- 118db ,信號動態范圍是70db載波普勒是75khz ,目標捕獲在0 . 2秒內。Based on research and experiments, we effectively improved the s - band tt & c transponder for satellite in such dimensions : with sensitivity up to - 92dbm ; dynamic range wider than 55db ; capture bandwidth of the receiver wider than 500khz ; capture time reduced to 22ms
通過論文工作,成功地改進了川于衛星的s波段測控通信一體機,跟蹤和捕獲接收靈敏度都能達到一92dbm ,動態范圍55db以上,接收機的捕捉帶寬大於500khz ,捕捉時問減小到22ms 。At the same length, the insertion loss of different sub - channels also undergoes changes. this effect, along with the intrinsic background noise, impulse noise and the receiving sensitivity of modem on the adsl, will limit the maximum transmission distance on one single subscriber line
首先,銅線的插入損耗將隨著線路距離的增加而成比例地增加,並且在同一距離下各子通道的插入損耗也發生變化,這個因素和線路固有的背景噪聲、脈沖噪聲、數據機的接收靈敏度一起將限制在單用戶線上adsl所能夠傳輸的最大距離。3. with comprehensive improvement of transponder including structural adjustment to lna ; optimization of ( phase locked loop ) pll filter ; structural adjustment to the transmitter and phase error adjustment to the intermediate frequency demodulation circuit, we have successfully enhanced sensitivity, expanded dynamic range, increased transmitting power and improved the spectrum purity ; decreased capture time for pll ; improved the signal quality after demodulation ; reduced its volume and power consumption. 4
3 、對通信機的全面改進,包括lna結構的調整、鎖相環環路濾波器的優化、發射部分結構的調整以及中頻解調電路的相差調整,提高了系統的接收靈敏度、改善了本振的頻譜純度、減少了鎖相環的鎖定時間、使中頻解調后的信號質量大為提高,同時還減少了體積、節約了系統的功耗。The rf receiver consists of rf front end and baseband regulation module. the high - intermediate - frequency superheterodyne structure is adopted in the final scheme. the fine sensitivity of the receiver is achieved by two cascaded lna in the front of the system
系統採用超外差式變頻結構設計,兩級低噪聲放大單元級聯保證了接收機靈敏度,兩級增益控制單元實現了所要求的接收機動態范圍,並且整機的線性度也得到了保證。This design keep the twice frequency transform and the superheterodyne structure in analog receiver, and use programmable direct digital synthesizer ( dos ) in rf section. use this method, we can not only inherit the advantage of high sensitivity and high selection in traditional design, but also improve the automation of the equipment
該方案保留了原模擬接收機二次變頻的超外差結構,在射頻前端利用了可編程的數字頻率合成器( dds ) ,這樣既繼承了原接收機的高靈敏度,高選擇性的優點,又提高了它的接收機自動化特性。Each of them is about 5 times more sensitive than the old receiver, located at the base of the line feed
每一個的靈敏度都是原來線饋源底部老接收器的5倍以上。This article according to the acquirement of the system parameters such as : temperature sensitivity 、 angle resolution 、 image forming time etc to design the type and diameter of the antenna ; the receiver type, integral time, rf gain, lpf gain ; the mode of calibration ; the sample frequency and program of the daq ; the scanning time, scan type, etc
本文根據系統溫度靈敏度、角解析度、成像時間等參數要求,對系統天線類型、直徑,接收機類型、積分時間、射頻增益、視頻放大器增益,定標方式,數據採集卡的采樣頻率、編程及驅動裝置的掃描速度、掃描類型等進行了詳細的分析設計。The article analyses wide angle laser signal receiving system and the receive sensitivity of system, and studies the problems on circuits designing of laser receiving system
對廣角激光信號接收系統和系統的探測靈敏度進行了分析,研究了激光接收系統電路設計問題。Secondly, the wavelength of light source and the distance between the source and detector, two key parameters in reflectance sensor design, are determined according to theory in light transmitting and experiments in lab. thus the sensitivity and dependability in reflectance monitoring is improved as much as possible
本文接下來討論了反射式血氧探頭中兩個重要參數? ?光源波長的選擇和光源與接收器之間距離的確定,以保證在反射檢測中能獲得最高的血氧測量靈敏度和可靠性。The parameters of the long - range remote control receiving system are analyzed and simulated thoroughly, such as the signal to noise ratio ( snr ) at the receiver, the delicacy of receiver, auto - gain and band - width of the pass - band. then the important references are provided for the design of long - range remote control receiver
分析了遠程遙控接收系統的參數如接收機輸入信噪比、接收機靈敏度、自動增益和接收機通帶帶寬等,並對遙控接收系統性能指標進行了估算,為遠程遙控接收機的設計提供了一定的理論依據。The simulated results show that we can improve the sensitivity by setting the optical bias at / 2, reducing the gap of electrode, increasing the overlap integral factor, reducing the insert lose, adopting suitable segmentation number, increasing the electrode length, increasing the optical power, reducing the wavelength and the relative intensity noise and reducing the receive bandwidth ; obtain the wider bandwidth utilizing reducing the electrode length and the capacitance of modulator, segmentation the electrode ; increase the dynamic range using lowering noise, increasing the optical power at the detector and lower optical bias
通過計算得知,使傳感器相位偏置為/ 2 ,減小電極間距,提高電光重疊因子,減小器件插入損耗,採用合適的分段數,增加電極長度,增大光功率,降低激光的波長,減小相對強度噪聲,減小接收帶寬,對提高靈敏度的效果是非常明顯的。而減小天線長度,降低調制器電容,電極分段,都可以獲取較大的帶寬。降低系統噪聲;增加到達探測器的光功率,採用較低的光學偏置,都可以增大線性動態范圍。Making use of the idea of the parallel genetic algorithms, presenting the adaptive multiple subpopulation evolutive strategy. presenting extinction and immigration strategy in order to avoid the similar or even same individuals appear. in order to enhance convergence velocity of reactive power optimization of the radial distribution system, combining the characteristic of the radial distribution system, a sensitivity analysis approach was build up for optimal selection of capacitors and mutation of transformer tap changer
為了提高配電網無功優化的收斂速度,結合配電網的特點,提出採用簡單可行的靈敏度公式選擇無功電容補償器的安裝地點,並用靈敏度分析變異變壓器分接頭,使變異運算元的選取更符合配電網無功優化問題中關于調節變壓器分接頭的實際情況,減少了一些不必要的變異運算,使適應性和魯棒性加強;根據實際情況採用無功補償電容器的啟發式變異,使變異運算元的選取更符合無功優化問題中關于補償電容器的實際。分享友人