See attached pdf

The manuscript presents a tool aimed at better characterizing a study site, mainly on geometric criteria, in order to optimize the installation of a GBINSAR instruments, in particular for monitoring unstable slopes. The sofware tool that is the subject of the article is therefore of interest for GBINSAR users. The article first presents in great detail the geometric and methodological aspects, then an application to a simulation and to two real test cases. While this is generally convincing, the article has some weaknesses.

As a first reviewer has already made a very thorough comments and I only has access to the initial version of the manuscript, I will not repeat the important points of the previous review (addressed in the responses produced by the authors) to not be redundant.

Section 2. Table 1 presents some problems. Line of sight, in the unit column it would be better to replace "vector" with "unit vector" probably in "m" (a vector has a unit). Radar wavelength, the radar is not limited to 0.8 cm - 10 cm (e.g. the L-band is more like 23 cm). Synthetic antenna length, "L can be infinite", L is constrained by the fact that a target must be during the acquisition within the footprint of the beam and therefore cannot be infinite (even if several km). Range Resolution, "vertical" should be "line of sight". Azimuthal resolution, you should add "parallel to the sensor's motion", "horizontal" does not fully define the direction.

Section 2.1.4, Table 2 specifies 17.1 to 17.3 GHz, it seems to me that this restriction is only for the Ku band (GBSARs operating on other bands exist), it needs to be clarified.

L260 EQ 11. The equation seems incomplete (at least one vector is missing to the right of the matrix). In addition, an element of the matrix must be missing a "-" sign  (the determinant of the matrix is different from 1 as a rotation matrix should have).

L306 a typo after "Figure 10"

Table 5: "Location" columns must mention the unit ([m]?)

Figure 11 the scale (65) seems too large (compared to the 200m) and does not mention the unit. Maybe just remove (the 200m line could be enough)?