[1] LI C L, ZHANG F M, QU X H. High⁃resolution frequency⁃modulated continuous⁃wave LiDAR using multiple laser sources simultaneously scanning. Journal of Lightwave Technology, 41, 367-373.

[2] TANG L W, JIA H X, SHAO S et al. Hybrid integrated low⁃noise linear chirp frequency⁃modulated continuous⁃wave laser source based on self⁃injection to an external cavity. Photonics Research, 9, 1948-1957(2021).

[3] LIEHR S, MÜNZENBERGER S, KREBBER K. Wavelength⁃scanning coherent OTDR for dynamic high strain resolution sensing. Optics Express, 26, 10573-10588(2018).

[4] SONG L M, ZHANG F M, SUN D et al. Research progress of absolute distance measurement methods based on tunable laser frequency sweeping interference. Infrared and Laser Engineering, 51, 316-330(2022).

[5] MARCON L, GALTAROSSA A, PALMIERI L. High⁃frequency high⁃resolution distributed acoustic sensing by optical frequency domain reflectometry. Optics Express, 27, 13923-13933(2019).

[6] SCHNEIDER R, THUERMEL P, STOCKMANN M. Distance measurement of moving objects by frequency modulated laser radar. Optical Engineering, 40, 33-37(2001).

[7] CHEN X L, WANG X C, PAN S L. Accuracy enhanced distance measurement system using double⁃sideband modulated frequency scanning interferometry. Optical Engineering, 56(2017).

[8] SHANG Y, LIN J R, YANG L H et al. Precision improvement in frequency scanning interferometry based on suppression of the magnification effect. Optics Express, 28, 5822-5834(2020).

[9] GAN Y, DUAN C H, LIU G D et al. Dynamic frequency scanning interferometry measurement based on optical frequency synchronous motion measurement and error compensation. Optics Communications, 488(2021).

[10] MO D, WANG R, LI G Z et al. Double⁃sideband frequency scanning interferometry for long⁃distance dynamic absolute measurement. Applied Physics B, 123(2017).

[11] ZHANG K S, LV T, MO D et al. Double sideband frequency scanning interferometry for distance measurement in the outdoor environment. Optics Communications, 425, 176-179(2018).

[12] WANG Z A, LIU Z G, TIAN K et al. Frequency⁃scanning interferometry for dynamic measurement using adaptive sage⁃husa kalman filter. Optics and Lasers in Engineering, 165(2023).

[13] YANG J L, ZHA K D. Two signal phase modulation for SBS suppression in optical fiber CATV transmission system. Chinese Journal of Lasers, 27, 724-728(2000).

[14] XU M M, ZHOU Y, SUN J F et al. Generation of linear frequency modulation laser source with broadband narrow linewidth using optical phase modulator. Infrared and Laser Engineering, 49(2020).

[15] ZHAO M M. Research on wide optical comb system based on cascaded external modulators(2021).

[16] WANG Z H, HUANG X D, YANG W. The measuring phase method of all⁃phase FFT. World Sci⁃Tech R & D, 29, 28-32(2007).

[17] NIKITENKO A N, PLOTNIKOV M Y, VOLKOV A V et al. PGC⁃atan demodulation scheme with the carrier phase delay compensation for fiber⁃optic interferometric sensors. IEEE Sensors Journal, 18, 1985-1992(2018).

[18] ZHANG S H, YAN L P, CHEN B Y et al. Real⁃time phase delay compensation of PGC demodulation in sinusoidal phase⁃modulation interferometer for nanometer displacement measurement. Optics Express, 25, 472-485(2017).