Figures 1,2 and 3 shows the three Level-1 processing chains (LRM, PLRM and SAR_Ku) specifying the algorithms involved, the input products required, the output products generated, and the main output parameters (tracker range, sigma0 scaling factor and L1 waveforms).

Figure 1: Level-1 LRM chain (Credit: isardSAT)

Figure 2: Level-1 PLRM chain (Credit: isardSAT)

Figure 3: Level-1 SAR_Ku chain (Credit: isardSAT)