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- This paper disscusses the interception methods of quadrature phase shift keying (QPSK) radar signal, which include spectral correlation detection and wavelet analysis. 本論文討論四相編碼雷達信號的偵察、截獲方法。
- The performance estimation of quadrature phase shift keying (QPSK) signaling over a Rice lading channel was simulated and the corresponding analyzing results were obtained. 最后，對數字調制后的QPSK信號通過(guò)萊斯衰落信道時(shí)的性能進(jìn)行了仿真估計，并得到相應的分析結果。
- Abstract: In a multi-beam bathymetry system, phase detection is a key for achieving super-wide coverage. 文章摘要: 多波束測深系統中，相位檢測法是實(shí)現超寬覆蓋測量的關(guān)鍵技術(shù)之一。
- Transverse Zeeman laser is the ideal light source of phase detection in biomolecular interaction based on SPR principle. 橫向塞曼激光器是基于SPR原理的生物分子相互作用相位檢測的理想光源。
- The DFT phase detection method can take out frequency, phase and magnitude of the base frequency signal from a random synchronization signal. 離散傅里葉變換可以從任意信號中抽取基準頻率倍頻次信號的相位、頻率和幅值,可以解決諧波對外同步信號的影響,從而實(shí)現周期控制鎖相環(huán)對諧波的識別。
- Quality control:material chemical analysis,physical detection,hardness measurement,crevasse detection,metallurgical phase detection. 質(zhì)量控制：材料化學(xué)分析，物理檢測，產(chǎn)品硬度檢測，裂紋檢測，金相檢測。
- The characteristic of the differential phase detection (DPD) signal of the SWML read-only disc is analyzed both in theory and experiment. 本文通過(guò)理論仿真和實(shí)驗研究分析了SWML只讀光盤(pán)的差分相位檢測（DPD）信號的特性。
- OQPSK. Offset quadrature phase shift keying 偏置的正交頻移鍵控
- A-QPSK Aeronautical Quadrature Phase Shift Keying 航空四相相移鍵控
- QPAM Quadrature Phase and Amplitude Modulation 正交相位和幅度調制
- A phase detection method based on the Bayesian spectrum estimation is proposed for improving the accuracy of traditional phase analysis method in this paper. 摘要針對傳統的相移分析方法誤差大的問(wèn)題，通過(guò)合理的選取信號模型，采用貝葉斯頻譜估計算法對實(shí)驗中輸入輸出信號進(jìn)行了相位識別。
- QPSK Quadrature Phase Shift Keying 正交相移鍵控
- DQPSK. Differential quadrature phase shift keying 差分正交相移健控
- 4 Offset quadrature phase shift keying 4偏置四相相移鍵控
- A digital method for phase detection is used on DFT.The limited length series of data is transformed and it is associated with picket-fence signal problem. 摘要用DFT進(jìn)行相位檢測的一種數字化方法，對有限長(cháng)序列進(jìn)行變換，涉及到信號截斷的問(wèn)題。
- phase locked loop quadrature phase shift 鎖相環(huán)四相相移鍵控
- A dividerless PLL can be implemented by Aperture Phase Detection (APD) technique because this method only compares reference and VCO phase ones every reference period. 論文的最后提出了利用隙縫相位偵測技術(shù),來(lái)達成不需除頻器的鎖相迴路電路。這個(gè)方法能在每個(gè)參考周期中只會(huì )讓參考輸入相位與壓控振蕩器的輸出相位比較一次。
- differential quadrature phase shift keying 差分四相相移鍵控
- quadrature phase shift keying(QPSK) 正交相移鍵控
- quadrature phase and amplitude modulatio 正交調幅調相
