[5] [5] CARIS M, STANKO S, SOMMER R, et al. SARape-synthetic aperture radar for all weather penetrating UAV application[C]//2013 IEEE International Radar Symposium. Dresden,Germany:IEEE, 2013:41-46.

[6] [6] KIM S H,FAN R,DOMINSKI F. ViSAR:a 235 GHz radar for airborne applications[C]// 2018 IEEE Radar Conference. Oklahoma City,OK,USA:IEEE, 2018:1549-1554.doi:10.1109/RADAR.2018.8378797.

[7] [7] YU J,KIM S,KA M H. A 94 GHz frequency modulation continuous wave radar imaging and motion compensation[M]// Graham Weinberg. Topics in Radar Signal Processing, 2018.

[9] [9] ITU-R. Recommendation ITU-R P.676-3. Attenuation by atmospheric gases[S]. 1998.

[12] [12] ULABY F T, SARABANDI K, MCDNALD K, et al. Michigan microwave canopy scattering model[J]. International Journal of Remote Sensing, 1990,11(7):1223-1253.

[14] [14] CARRARA W G,GOODMAN R S,MAJEWSKI R M. Spotlight Synthetic Aperture Radar:signal processing algorithms[M]. Boston: Artech House, 1995.