给出数字正交解调后输出I、Q两路信号的幅度一致性误差和相位正交性误差的测试方法和测试结果；
Realize digital orthogonal demodulation; the method and results of amplitude consistence and phase orthogonality of the I, Q signal have been given;
给出了FM正交解调结构，即在统一的中频数字化硬件平台上，与单边带、调幅等波形一起在基带完成正交解调。
The architecture of FM quadrature demodulation was provided. On the universal IF digitalization hardware platform, FM waveform was demodulated in base-band together with SSB and FM.
文章基于多相滤波的数字正交变换技术，通过数学推导，提出了一种软件无线电中的数字化正交解调新算法。
Based on polyphase filtering technology for digital quadrature transform, this paper presents a new algorithm for digital quadrature demodulation in SR through mathematical derivation.
然后介绍了数字化中频处理中的采样理论、正交混频解调、滤波抽取等基础理论。
The basic theory of IF signal processing, such as sample theory, quartered demodulating technology, filtering, draw-off and interpolating theory is discussed.
最后，对某超宽带正交解调接收机的实际测量结果的数字校正，验证了这种方法的有效性。
Finally, the validity of digital correction is verified by simulation and practical measurement of a UWB quadrature demodulation receiver.
完成了基于FPGA平台的多频恒流激励源和数字化正交序列解调模块的设计、构建与实验验证。
Design, construction and verification test is made to complete a multi-frequency excitation source based on FPGA and to complete a digital quadrature demodulator.
完成了基于FPGA平台的多频恒流激励源和数字化正交序列解调模块的设计、构建与实验验证。
Design, construction and verification test is made to complete a multi-frequency excitation source based on FPGA and to complete a digital quadrature demodulator.
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