Beijing Institute of Systems Engineering and Information Control, Beijing 100071, China; [EMAIL_ADDRESS] (6) College of Basic Sciences for Aviation, Naval Aviation University, Yantai 164001, China; [EMAIL_ADDRESS] (7) Institute of Physical Science and Information Technology, Anhui University, Hefei 230031, China (8) Correspondence: [EMAIL_ADDRESS] (W.W.); [EMAIL_ADDRESS] (X.L. )1  
[PERSON]  
1 College of Science, National University of Defense Technology, Changsha 410073, China;[EMAIL_ADDRESS] (Q.J. ); [EMAIL_ADDRESS] (X.C. ); [EMAIL_ADDRESS] (M.F. ); [EMAIL_ADDRESS] (H.Z. ); [EMAIL_ADDRESS] (W.Y. )1  
[PERSON]  
1 College of Science, National University of Defense Technology, Changsha 410073, China;[EMAIL_ADDRESS] (M.F. ); [EMAIL_ADDRESS] (H.Z. ); [EMAIL_ADDRESS] (W.Y. )1  
[PERSON]  
1 College of Science, National University of Defense Technology, Changsha 410073, China;[EMAIL_ADDRESS] (M.F. ); [EMAIL_ADDRESS] (M.F. ); [EMAIL_ADDRESS] (H.Z. ); [EMAIL_ADDRESS] (W.Y. )1  
[PERSON]  
4 Basic Department, Army Academy of Artillery and Air Defense, Hefei 230031, China; [EMAIL_ADDRESS] (H.Z. ); [EMAIL_ADDRESS] (W.Y. ); shibib01982,1982162.com (B.S.) Beijing Institute of Systems Engineering and Information Control, Beijing 100071, China; [EMAIL_ADDRESS] (6) College of Basic Sciences for Aviation, Naval Aviation University, Yantai 164001, China; [EMAIL_ADDRESS] (7) Institute of Physical Science and Information Technology, Anhui University, Hefei 230031, China (8) Correspondence: [EMAIL_ADDRESS] (W.W.); [EMAIL_ADDRESS] (X.L. )1  
[PERSON]  
1 College of Science, National University of Defense Technology, Changsha 410073, China;[EMAIL_ADDRESS] (Q.J. ); [EMAIL_ADDRESS] (M.F. ); [EMAIL_ADDRESS] (H.Z. ); [EMAIL_ADDRESS] (W.Y. )1  
[PERSON]  
1 College of Science, National University of Defense Technology, Changsha 410073, China;[EMAIL_ADDRESS] (Q.J. ); [EMAIL_ADDRESS] (M.F. ); [EMAIL_ADDRESS] (H.Z. ); [EMAIL_ADDRESS] (W.Y. )1  
[PERSON]  
4 Basic Department, Army Academy of Artillery and Air Defense, Hefei 230031, China; [EMAIL_ADDRESS] (H.Z. ); [EMAIL_ADDRESS] (W.Y. ); shibib01982,1982162.com (B.S.) Beijing Institute of Systems Engineering and Information Control, Beijing 100071, China; [EMAIL_ADDRESS] (6) College of Basic Sciences for Aviation, Naval Aviation University, Yantai 164001, China; [EMAIL_ADDRESS] (7) Institute of Physical Science and Information Technology, Anhui University, Hefei 230031, China (8) Correspondence: [EMAIL_ADDRESS] (W.W.); [EMAIL_ADDRESS] (X.L. )123 The photonic ADC (PADC) based on ultra-short optical pulse trains has been demonstrated to be a powerful tool to overcome the bottleneck of EADCs, achieving an ultra-high sampling rate and ultra-wide bandwidth [7; 8]. [PERSON] et al. have demonstrated that the photonic approach can deliver on its promise by digitizing a 41 GHz RF signal with an effective number of bits (ENOB) of 7.0 using a PADC. Taking advantage of photons in wideband processing and electrons in high-precision quantization, the photonic-sampled and electronic-quantized PADC has become one of the mainstream schemes [9; 10; 11; 12; 13; 14; 15]. For instance, [PERSON] et al. have realized a time-wavelength interleaved PADC with a 40 GSa/s sampling rate, and an RF signal of 2.5 GHz was sampled and quantized, achieving an ENOB of 3.45 bits [9]. [PERSON] et al. have implemented a dual channel PADC system with a 10 GHz repetition rate and a 19.8 fs time jitter pulse source, successfully sampling and quantifying 1.1 GHz and 36.3 GHz RF signals into ENOBs of 5.85 and 3.75 bits, respectively [14]. In these PADC schemes, RF signals are sampled through optical pulses and digitized through electronic quantizers, such as EADCs or oscilloscopes. Thanks to the high bandwidth and fast response of the electro-optic modulator, high-frequency RF signals can be directly loaded into high-speed optical sampling pulses smoothly, while the sampled pulses carrying RF signals need to be demultiplexed to multiple channels to adapt to a low sampling rate limited by the EADC.