Changes for this version include:

• Added a QA parameter that indicates the percent of reference photons within a certain distance from the reference DEM (at the geolocation segment rate). The threshold difference for each possible confidence level of reference photons is: 50 m for high confidence; 100 m for medium confidence; 200 m for low confidence; and 200 m for buffer/noise-level reference photons.
• Fixed a logic error in the code that combines the POD and PPD degrade values. In conjunction with this fix, the definition of the podppd_flag parameter was changed to simply indicate if POD, PPD, or both report, in general, a degraded geolocation solution. The previous approach was deemed overly complex for users.
• Effectively removed from consideration by the signal classification processing any photons from telemetry bands that do not intersect the DEM height within a +/- 30 m buffer. Additionally, photons that are poorly geolocated (as indicated by the podppd_flag) are no longer classified as potential signal.
• Created two new parameters (/gtx/geolocation/near_sat_frac and /gtx/geolocation/full_sat_frac) that indicate nearly or fully saturated ATLAS shots. These parameters report the percentage of observed shots that are nearly or fully saturated within a geolocation segment.