**5. Conclusions**


**Author Contributions:** Conceptualization, M.B.J. and M.B.; Data triage and review, M.B.; Processing, formal analysis M.B.J. and M.B.; Writing—Draft, M.B.J. and M.B.; Writing—Review and Editing, M.B.J. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Restrictions apply to the availability of these data. Data was obtained from HCR-CTRO and are available from the authors with the permission of HCR-CTRO, www.ctro. hr/en accessed on 19 February 2021.

**Acknowledgments:** The authors are grateful to colleagues who contributed to the development of the described hyperspectral aerial and ground-based survey system: H. Gold, T. Kiˇcimbaˇci, M. Krajnovi´c, D. Vuleti´c, T. Ivelja, A. Brook, A. Krtali´c, M. Tomi´c, I. Racetin, and G. Skelac. The research leading to these results was possible due to data available from the European Community's Seventh Framework Programme FP7/2012–2015, under gran<sup>t</sup> agreemen<sup>t</sup> n◦ 284747, project TIRAMISU.

**Conflicts of Interest:** The authors declare no conflict of interest.

#### **Appendix A. Target Spectra Overlaid with 10% of the Terrain 147 Spectra**

**Figure A1.** Probability of detection (POD), the confidence limits (PODupper, PODlower), and polynomial approximations (Poly) of BR 147.

**Figure A2.** Probability of detection (POD), the confidence limits (PODupper, PODlower), and polynomial approximations (Poly) of CMR 147.

**Figure A3.** Probability of detection (POD), the confidence limits (PODupper, PODlower), and polynomial approximations (Poly) of MMR 147.

**Figure A4.** Probability of detection (POD), the confidence limits (PODupper, PODlower), and polynomial approximations (Poly) of UXOXR 147.

#### **Appendix B. Targets Obstructed by 25.7% in Terrain 227**

**Figure A5.** Probability of detection (POD), the confidence limits (PODupper, PODlower), and polynomial approximations (Poly) of BR 227.

**Figure A6.** Probability of detection (POD), the confidence limits (PODupper, PODlower), and polynomial approximations (Poly) of CMR 227.

**Figure A7.** Probability of detection (POD), the confidence limits (PODupper, PODlower), and polynomial approximations (Poly) of MMR 227.

**Figure A8.** Probability of detection (POD), the confidence limits (PODupper, PODlower), and polynomial approximations (Poly) of UXOXR 227.

**Appendix C. Terrain with Several Targets**

**Figure A9.** Hyperspectral scene 147: Dimensions, 18.681 × 18.681 m; 1000 × 1000 pixels; colorvisualized (r = 650 nm, g = 550 nm, b = 460 nm).

**Figure A10.** Hyperspectral scene 227: Dimensions, 18.681 × 18.681 m; 1000 × 1000 pixels; colorvisualized (r = 650 nm, g = 550 nm, b = 460 nm).
