pilot signals 中文意思是什麼

pilot signals 解釋
引航信號引航信號
  • pilot : n 1 領港員，舵手；【航空】駕駛員，飛行員；領航員；【火箭】起動人員；指導員，領導人；〈美國〉向導...
  • signals : 信號
  1. Article 50 when a pilot - in - command received sos signals from a ship or another aircraft, or discovered a ship or an aircraft and the persons therein in distress, he shall report the state of distress in time to the nearest air traffic control unit and give possible, rational assistance

    第五十條機長收到船舶或者其他航空器的遇險信號，或者發現遇險的船舶、航空器及其人員，應當將遇險情況及時報告就近的空中交通管制單位並給予可能的合理的援助。
  2. Although the engines restarted before the pilot was even aware of the problem, the momentary power loss dropped the telemetry signals to the control room on the ground

    在飛行員還未意識到出問題前引擎就重新啟動了，但是故障瞬間造成的電源中斷也切斷了和地面之間的聯絡。
  3. The viterbi decoder with hard decision designed by the paper, is aimed at ( 3, 1, 9 ) convolutional coding. the data rate is 9. 6kbps. the data rate received by the rake receiver is spreaded by 127 - bit spread sequences, added pilot signals and modulated by qpsk

    該課題所設計viterbi譯碼是針對（ 3 ， 1 ， 9 ）卷積碼的硬判決譯碼，數據速率為9 . 6kbps ; rake接收機所接收的數據是擴頻因子為127 、加入導頻且經qpsk調制的擴頻信號，使用verilg硬體描述語言在xilinx公司的ise環境下在用現場可編程門陣列（ fpga ）來實現viterbi譯碼器和rake接=收機的功能。
  4. When studying the basis expansion approach, a new scheme utilizing pilot signals is proposed, which takes full advantage of high processing gain of dpcch. utilizing fourier transform, the frequencies and the coefficients of basis can be estimated

    在基展開方法中，充分利用對dpcch解擴后的系統處理增益為24db的優點，結合基展開的思路，提出了基於基展開的通道非盲估計。
  5. To overcome the affection of ici and awgn on the ls estimate of the transfer function at pilot tones, the proposed bispectrum - based channel estimation algorithm employ the suppression of ici and awgn components in the received pilot signals by bispectrum and then the accuracy of the estimation is improved. with the channel estimation at pilot tones, an efficient interpolation is necessary. an improved interpolation method based on transform - domain filtering is proposed, which employs dft / idft and filtering in a transform domain so that the effect of noise on the equalization is significantly reduced

    針對導頻處通道傳遞函數的ls估計中存在載波間干擾和加性高斯白噪聲的影響的這一問題，本文將傳統的ls估計方法與雙譜相結合提出了一種新型的基於導頻雙譜通道估計演算法，它利用了雙譜對高斯噪聲的抑制作用來減小接收到的導頻信號中的載波間干擾和加性高斯白噪聲的影響，從而提高了導頻子載波上通道估計的精度。
  6. The method of optimal parametric feedforward estimation of fading channels, which is used in tdma systems originally, is modified to cope with matrix singularity because the number of pilot signals is small in wcdma systems

    當應用於wcdma系統時，因為wcdma系統的導頻信號數遠遠少於tdma系統的導頻信號數，所以在用最小二乘方法估計通道時，無法滿足導頻信號數大於兩倍多徑數的條件，導致矩陣不可逆。
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