Radar Broadband Beamforming Technique Based on Sub-wavelength Stepped Optical Delay Line

Ang LIU; Guanghao SHAO; Jiquan ZHAI; Xingwei YE; Guoqiang ZHANG

doi:10.3788/gzxb20225103.0306001

[1] G KRIEGER, N GEBERT, A MOREIRA. Multidimensional waveform encoding: a new digital beamforming technique for synthetic aperture radar remote sensing. IEEE Transactions on Geoscience and Remote Sensing, 46, 31-46(2007).

[2] M YOUNIS, C FISCHER, W WIESBECK. Digital beamforming in SAR systems. IEEE Transactions on Geoscience and Remote Sensing, 41, 1735-1739(2003).

[3] Bindong GAO, Fangzheng ZHANG, Ermao ZHAO et al. High-resolution phased array radar imaging by photonics-based broadband digital beamforming. Optics Express, 27, 13194-13203(2019).

[4] TUR M . True time delay photonic beamforming: a review, 1-2(2009).

[5] B VIDAL, T MENGUAL, C IBANEZ-LOPEZ et al. Optical beamforming network based on fiber-optical delay lines and spatial light modulators for large antenna arrays. IEEE Photonics Technology Letters, 41, 2590-2592(2006).

[6] R RAJAMAKI, P C SUNDEEP, K VISA. Analog beamforming for active imaging using sparse arrays, 1202-1206(2019).

[7] Guangyi ZHANG, Yujie ZHAO. Phased array radar technology(2006).

[8] Yaobing LU, Kailiang DAI, Yan CHEN. Research of wideband and widescan phased radar technology. Systems Engineering and Electronics, 26, 288-290,316(2004).

[9] Xiaoli CHEN, Yechao BAI, Xinggan ZHANG. Beamforming method of time-phased array radar based on real time delay. Journal of Data Acquisition and Processing, 28, 431-435(2013).

[10] Shilong PAN, Xingwei YE, Yamei ZHANG et al. Microwave photonic array radars. IEEE Journal of Microwaves, 1, 176-190(2021).

[11] Jian WANG, Haiwen CAI, Peipei HOU et al. Optical multi-beam formation technology of broadband phased array antenna based on stack integrated micro-optical components. Acta Physica Sinica, 44, 1125002(2015).

[12] Zishu HE, Lin JIN, Yunjie HAN et al. Development and implementation techniques of optically controlled phased array radar. Acta Electronica Sinica, 33, 2191-2195(2005).

[13] Dongwen LI, Chunyan JIA, Lihua YE et al. True-time-delay technologies of optical controlled phased array antenna. Laser & Optoelectronics Progress, 43, 37-42(2006).

[14] Yuan LIU, R A WICHMAN, B ISAAC et al. Ultra-low-loss silicon nitride optical beamforming network for wideband wireless applications. IEEE Journal of Selected Topics in Quantum Electronics, 24, 1-10(2018).

[15] Xingwei YE, Fangzheng ZHANG, Shilong PAN. Optical true time delay unit for multi-beamforming. Optics Express, 23, 10002-10008(2015).

[16] Chijui CHUNG, Xiaochuan XU, Gencheng WANG et al. On-chip optical true time delay lines featuring one-dimensional fishbone photonic crystal waveguide. Applied Physics Letters, 112, 071104(2018).

[17] Chao XIANG, M L DAVENPORT, J B KHURGIN et al. Low-loss continuously tunable optical true time delay based on si3n4 ring resonators. IEEE Journal of Selected Topics in Quantum Electronics, 24, 1-9(2017).

[18] Junjia WANG, R ASHRAFI, R ADAMS et al. Subwavelength grating enabled on-chip ultra-compact optical true time delay line. Scientific Reports, 6, 1-10(2016).

[19] Jingya XIE, Linjie ZHOU, Zuxiang LI et al. Seven-bit reconfigurable optical true time delay line based on silicon integration. Optics Express, 22, 22707-22715(2014).