擾頻 的英文怎麼說
中文拼音 [rǎobīn]
擾頻
英文
scramble擾頻器 scrambler-
The fractional fourier transform is linear time - frequency transform, and it doesn ’ t have disadvantages of wigner - ville distribution. moreover, the precision of this method is higher, and the performance of antinoise is better
而分數階傅立葉變換是線性時頻變換，所以它不受交叉項的干擾，沒有不模糊區間減半的缺點，而且它的估計精度高、抗噪性能好。The spread spectrum communication with an aperiodic pn code and under strong man - made jammers has an important significance in military communications
強人為干擾環境下的非周期擴頻碼的擴頻通信在軍事上具有重要的意義。An electromagnetic wave of audio frequency produced by atmospheric disturbances such as lightning, having a characteristically decreasing frequency responsible for a whistling sound of descending pitch in detection equipment
嘯聲干擾一種由於諸如閃電等大氣干擾而產生的音頻電磁波，具有典型的逐漸減弱頻率的特徵，該頻減引起了檢波設備中調逐漸下降的嘯聲Production on two new pirates of the caribbean films, starring keira knightley, has been halted because of raids by real - life brigands, according to reports from the bahamas. two cast members have been forced to flee for their lives after a series of robberies at the grand bahama island location, producers of the disney film said
據泰晤士報網站11月25日報道，迪斯尼電影公司加勒比海盜續集的拍攝工作已經被迫中斷，原因是劇組和演員最近在巴哈馬群島拍攝地遭到現實生活中盜賊的頻繁騷擾。From the fact of the often - happened campus murdering case in us and several criminal fastigiums in japan, it can be seen that juvenile delinquency has become the centurial problem harassing the modern society
從美國頻繁發生的校園槍殺案件，到日本的幾次犯罪高峰，青少年犯罪已成為困擾現代社會的一大世紀難題。And more, a computer simulation has been made and the results indicate the validity of part time - resident interference under the certain ratio of jamming - to - signal time - resident, consequently, it may provide concerned methods for countermining fh communication systems
進一步進行了模擬與分析，結果表明在一定干信駐留時間比情況下，部分駐留時間干擾的有效性，從而為針對跳頻通信系統進行對抗提供相關方法。Fourthly, according with the analyzing of flow measurement, we research the main problems needed to be solve in the process of measurement, such as analysis and measurement of the internal resistance, selection of excitation frequency, stable signal datum mark and restraining common mode interference, restraining for serial mode interference and working frequency interference ; transporting and shielding the flow signal, constant current excitation and magnetic field equalizing, flow measuring
第四，根據對流量測量問題分析的，深入研究了設計過程中需要解決的主要問題。如內阻分析與測量;勵磁頻率的選擇;穩定信號基準點與抑制共模干擾;串模干擾與工頻干擾抑制;流量信號傳輸與屏蔽;恆流勵磁與磁場補償;流量測量點的選擇等。With the developing trend of large size and large capacity, the turbine ' s natural frequencies are decrescent, maybe reaching the input forces " order of magnitude. so, it is becoming more and more important to analyze the stability of a turbine
隨著水輪機組朝著大尺寸、大容量的方向發展，其自身的固有頻率也隨之降低，與干擾激振力的頻率屬于同一數量級，因此，水輪機組運行的穩定性就變成更為重要的問題。A building of high, the breadth, long comparison is very important. house for combination in an ideal of big set, reruns hour then contain the best frequency to respond to the width. frequency response range in other words, the combination can broadcast tallest to can also fully develop to the lowest frequency, and the equilibrium degree is as well high, and halt a circumstance is very tiny. the first glint wave primary reflection mutual interference for with wave secondary reflection of many glints the degree is not to result in confusion. combination that fundermental the diapason wave harmonics is again perfect
大套組合在一間理想的房子里，重播時便有最佳的頻率響應寬度frequency response range 。換句話說，組合所能播放的最高至最低頻率也可以盡情發揮，平衡度亦高，駐波情況極微。第一反射音波primary reflection和多次反射音波secondary reflection的互相干擾情度不至造成混亂。Furthermore, with the fourier series technique, the disturbance is discomposed into predominant mode and high frequency harmonics, and the nonlinear stability of the nonparallel boundary layer is studied
採用fourier級數的方法把擾動波分解為基本模態和高頻諧波模態，導出非平行非線性拋物化穩定性方程。With the fourier series technique, the disturbance is discomposed into predominant mode and high frequency harmonics. the nonlinear stability of three - dimensional disturbances for the blasius boundary layers is studied
藉助fourier級數的方法將擾動波分解為基本模態和高頻模態，研究了三維擾動的非線性邊界層穩定性問題。Scrambler - a device that electronically alters a program signal so that it can be seen only by persons, typically paid subscribers, with appropriate decoding, or " descrambler " devices
擾頻器-此電子設備可以改變一個節目的信號，只有在正確的解碼或安裝正確的裝置時，才能被特定人群收看，特別是付費訂戶。2. the cement rotary kiln is a complex process, which has nonlinear and time - varying characteristic and exist strong and frequent disturbance, so global model is hard to establish. based on analysis of the characteristics of the decomposing furnace in hangzhou cement rotary kiln plant, a new fuzzy predictive control method with multi - model structure is proposed
根據水泥生產線系統復雜、干擾頻繁、全局模型建立困難的實際情況，通過對回轉窯燒成工藝和分解爐過程特性的分析，提出一種基於t - s模型的多模結構的預測控制演算法，並在dcs系統中開發了實時控制的軟體。The scrambling and descrambling technologies include non - disturbing frequency method, analog base band disturbing method, the radio - frequency signal disturbing method, the digital disturbing method for the analog signal and the digital signal disturbing method, etc. after the introduction a project based on the compression of the rf synchronous information is formulated
本文綜述了目前常用的幾種主要的電視信號的加解擾技術，如非擾頻加解擾技術、模擬基帶加解擾技術、射頻信號加解擾技術、模擬信號的數字處理加解擾技術以及數字信號加解擾技術等。A novel communication receiver which uses lapped transform ( lt ) incorporating modified median filter ( mmf ) algorithm is designed for narrow - band interference excision. the lt domain mmf algorithm takes full advantages of the direct sequence spread spectrum signal, as well as the characteristics of lt, performing the transform domain filtering twice. the first filtering locates the position of interference and mitigates most of them. the second filtering is performed in a small neighborhood of the located interference. so lt domain mmf algorithm can completely mitigate the interference without distorting the desired signal. simulation results demonstrate the improved ber performance and increased robustness of our receiver
本文採用改進的重疊變換域中值濾波演算法進行變換域抗干擾處理.該演算法既考慮到直接序列擴頻信號的特點，同時又利用重疊變換的特性對變換域系數進行了二次濾波.該演算法節省處理時間，並且不需要有關干擾的先驗知識，系統性能不會隨干擾頻率變化而變化，因而是一種很穩健的處理方法Pulse internal phase coding and pulse external quasi random frequency agile signal is a kind of complex signal which can avoid interference frequency band, increase system bandwidth, consequently increase the range resolution
本文所研究的脈內二相編碼脈間準隨機跳頻信號是復合信號的一種，可以避開干擾頻段，提高系統帶寬，從而提高了距離分辨力。In this paper, the formulas of dynamic parameters provide good method to determine the dynamic parameters, which can reflect the influence of many factors such as the property of soil, the base area of foundation, the pressure of foundation, the exciting frequency and so on
本文得到的地基剛度、參振土質量和動力影響深度的計算公式能較好地反映地基土體性質、基底面積、基底壓力和擾頻等諸多因素對它們的影響，為更準確地確定機器基礎系統的動力參數提供了一種較好的途徑。The concepts of heterogeneity and homogeneity are scale - dependent. we describe nine plant - climate covers type landscape components or processes across a broad landscape for the possible response to climate change
不同尺度、干擾頻率、響應速率的生態過程作用於綠洲-荒漠生態系統，其異質性格局被整合到多維等級的空間綴塊動態範式上。The reason that bump vibrates when working is bump system ' s stimulus frequency is quite consistent with its inherent frequency and its hydraulic system ' s impact. by analyzing bump working frequencies " relation to its inherent frequency, the 150 - liter per minute input flow is recommended at exiting function parameters
結合動應力分析結果、固有頻率分析結果及疲勞壽命分析結果可以看出：系統的激擾頻率與結構一階固有頻率比較一致以及液壓系統的沖擊是引起泵車工作時振動的主要原因。Seashore paspalum. besides higher tolerance to stress heavy traffic, this grass is salt tolerant which means less fresh water will be needed for irrigation
這品種除了能承受更大的干擾頻繁的交通外，亦能抵受含鹽分的土壤，即表示用於灌溉的淡水可以減少。分享友人