AndThe power; and maximum height of the major (MFTA), The results in Figures 15 false sidelobe and (MFTA), are summarized in Table 2.are summarized ratio 2. 16 and Table Figure 15, Figure 16, and Tableof show the superiority the key lobe azimuth (ISLR), which isresults in 2 in between superiority of the proposed azimuth and with the proposed the ratio show the the total power two the sidelobes multichannel reconstruction process based reconstruction process based on AHRE. multichannel on AHRE.RangeFigure 13. Simulation benefits target in the target within the swath center according to AHRE. 2D spectrum Figure 13. Simulation outcomes of the pointof the point swath center depending on AHRE. (a) Reconstructed (a) Recon- prior to structed 2D spectrum ahead of re-skewing; (b) the recovered 2D spectrum; (c) the target. re-skewing; (b) the recovered 2D spectrum; (c) the focusing result; (d) trans-Ned 19 custom synthesis contour plots with the point focusing outcome; (d)1km 1km P1kmAzimuthP2 1km PFigure 14. The made scene with nine point-targets. Figure 14. The designed scene with nine point-targets.sAzimutP2 1km P17 ofRemote Sens. 2021, 13,Figure 14. The designed scene with nine point-targets.(a)Range samples(b)Variety samples(c)Variety samples(d)Figure 15. Imaging results from the designed scene with nine point targets handled by the traditional strategy according to Figure 15. Imaging final results of the made scene with nine point targets handled by the convenCHRE. (a) The made scene imaging result; (b) contour plots of P1; (c) contour plots of P2; (d) contour plots of P3.tional method depending on CHRE. (a) The created scene imaging outcome; (b) contour plots of P1; (c) contourTable 2.of P2; (d) contour plots of P3. of simulated point targets in Figures 15 and 16. plots The measured focusing parametersTarget P1 P2 P3 P1 P2 P3 P1 P2 P3 Res.(m) 1.75 1.75 1.75 1.74 1.74 1.74 1.73 1.73 1.73 Azimuth PSLR(dB) ISLR(dB) Res.(m) 0.67 0.67 0.67 0.67 0.67 0.67 0.66 0.66 0.66 Range PSLR(dB) ISLR(dB) MFTA (dB)MethodConventional-13.28 -13.26 -13.26 -13.27 -13.27 -13.26 -13.23 -13.23 -13.-10.06 -10.01 -10.03 -10.01 -10.03 -10.09 -9.80 -9.80 -9.-13.18 -13.36 -13.25 -13.22 -13.34 -13.38 -13.23 -13.23 -13.-10.01 -10.03 -10.09 -10.08 -10.14 -10.15 -9.80 -9.80 -9.-34.43 -31.95 -35.04 -78.89 -76.68 -82.56 — — –ProposedTheoretical value4.2. Simulation Experiments of Distributed Scene targets So that you can further verify the superiority in the proposed 2D multichannel reconstruction strategy depending on AHRE, a focused Sentinel-1 single look complicated (SLC) SAR image of Shandong Peninsula along with a Gaofen-3 (GF-3) SLC SAR image of Wuhan city inRemote Sens. 2021, 13,18 of3, x FOR PEER REVIEWHubei province are selected for azimuth multichannel echo simulation, reconstruction, and imaging, as shown in Figures 17a and 18a. Figures 17b and 18b show the imaging benefits processed by the standard azimuth multichannel reconstruction approach determined by CHRE, in which false targets occurred within the focused SAR Arimoclomol Epigenetic Reader Domain pictures. Together with the proposed azimuth multichannel reconstruction process according to AHRE, false targets are effectively suppressed and could not even be observed, as shown in Figures 17c and 18c. Com19 of 23 paring the simulation results in Figures 17 and 18, the false target suppression impact can be more simply observed in Figure 17 as the false targets on the island may be certainly noticed inside the sea region, as show in Figure 17b. Simulation final results on distributed scene further validated the false targets suppression impact with the proposed azimuth mul.
