Sept 30–Oct 2 · Weekly Flight Plan
September 30 · Viaduct El Llano
October 1 · KM20 S/N + KM21+200–KM22+200 + La Estadía
October 2 · KM22–KM27 corridor photogrammetry
GNSS and field TOP planning
Wednesday · El Llano
Select the actual TOP from current access and visibility. Establish the Emlid on a surveyed point, record the TOP chainage and ASL, then maintain Red CORS FIX and logging.
Thursday · KM20–KM22+200
Base A near KM21+260 supports KM20 and the KM21+200–KM22+200 corridor. Keep the Emlid fixed and logging for both. Establish a separate Base B near KM22+240 for La Estadía.
Friday · KM22–KM27
Select and record the field TOP based on access and visibility. Confirm RTK/PPK status and maintain corrections across both corridor exports.
Flight heights and plan check
FlightHub viaduct strips use EGM96 height mode: El Llano 2,944.46 m; KM20 S/N 2,504.46 m; La Estadía 2,544.46 m. The three corridor missions use 75 m real-time surface following, not a fixed ASL altitude. Record actual TOP ASL and panorama aircraft ASL in the field, then check obstacle clearance against current conditions.
The Plantas Generales drawings confirm viaduct chainage and show the design profile. Design grade is not the current terrain surface or an Emlid TOP reading; use the mission's vertical reference and field measurements for clearance checks.
Columns and perspectives · Red CORS México
Connect the controller directly to Red CORS México and confirm FIX. At each viaduct capture a center panorama, a whole-viaduct top-down, and each column/support column from above where visible and from both opposite sides. Add general perspectives showing the structure and surrounding terrain and works. Field order may change with access and conditions.
Field note format · keep every mission consistent
Record the TOP during setup as KMxx+xxx TOP, with its ASL elevation. Take a panorama at 50 m AGL above the TOP and record the aircraft ASL. At each viaduct, note the panorama AGL / aircraft ASL and the photographs taken. Separate new missions / TOPs with four asterisks. Examples below: replace the TOP chainage and blank readings with actual field observations.
TOP setup
KM21+260 TOP ASL ___ m Pano 50 m AGL · ASL ___ m
Viaduct / columns
KM20+880 Viaducto S/N Pano ___ m AGL · ASL ___ m Foto cenital del viaducto Columna ___: cenital, ambos lados Perspectivas generales del viaducto KM22+332 Viaducto La Estadía Pano ___ m AGL · ASL ___ m Foto cenital del viaducto Columna ___: cenital, ambos lados Perspectivas generales del viaducto
Photogrammetry mission
**** Misión fotogrametría KM21+260 TOP ASL ___ m Pano 50 m AGL · ASL ___ m KM21+200–KM22+200 **** Misión fotogrametría KM22+240 TOP ASL ___ m Pano 50 m AGL · ASL ___ m KM22+332 Viaducto La Estadía
Map legend
260930 · WednesdayVIADUCT EL LLANO · KM51+016–KM51+396
Viaduct El Llano · photogrammetry and column documentation
Map the full viaduct and its approaches, then complete the required column and general-perspective photographs before leaving the site.
2,944.46 m ASL · 74.46 m mapping height
Mapping strip · EGM96 height mode · elevation optimization ON.
80/80 overlap · 80 m left / right extensions · 10.5 m/s.
Centerline extent in supplied mission: 0.72 km.
Field sequence and delivery label
Use Copy to retain the delivery identifier. Connect to Red CORS México for columns and perspectives. Capture a panorama at the viaduct center, a whole-viaduct top-down, then each column/support column from above where visible and from both opposite sides. Add general perspectives showing the viaduct and its setting.
| Mission / delivery label | Required capture |
|---|---|
KM51 VIADUCTO EL LLANO | Photogrammetry + center panorama + whole-viaduct top-down + column photographs + general perspectives. |
Plant-plan check: the drawing labels the viaduct extent 651+016.450–651+396.450 (normalized to KM51+016.450–KM51+396.450; 380 m). Its profile shows the viaduct crossing a ravine and three interior support-column positions. The mission KMZ specifies 2,944.46 m in EGM96; this is not the design-deck elevation. Record the actual TOP ASL and confirm field clearance against the terrain and structure. Confirm column IDs on site.
261001 · ThursdayVIADUCT KM20+880 S/N · KM21+200–KM22+200 · VIADUCT KM22+332 LA ESTADIA
Three mapping missions · KM20 through La Estadía
The three supplied FlightHub exports total 19.65 km of mapping flight lines. Allow additional time for TOP setup, transfer between sites, launch/recovery, battery reserve and required manual captures; field order can change.
2,504.46 m ASL
Mapping strip · EGM96 · elevation optimization ON · quick ortho/pitch 30°.
80/80 overlap · 100 m left / right extensions · 10 m/s.
Flight-line export: 5.17 km.
75 m real-time surface following
80/80 overlap · 80 m left / 70 m right extensions · 21 m/s.
Flight-line export: 10.13 km.
2,544.46 m ASL
Mapping strip · EGM96 · elevation optimization ON · quick ortho/pitch 30°.
80/80 overlap · 100 m left / right extensions · 10.5 m/s.
Flight-line export: 4.35 km.
Recommended mapping TOP areas
Markers are alignment references for recommended TOP areas, not surveyed launch pads. Check access and visibility before selecting the actual TOP.
Field sequence and delivery labels
Use Copy to retain each delivery identifier. Complete viaduct photogrammetry, then connect to Red CORS México for columns and perspectives. Capture a center panorama, whole-viaduct top-down, and each column/support column from above where visible and from both opposite sides; include general perspectives.
| Mission / delivery label | Required capture |
|---|---|
KM20 VIADUCTO S/N | Photogrammetry + center panorama + whole-viaduct top-down + column photographs + general perspectives. |
KM21+200-KM22+200 | Complete the full supplied corridor photogrammetry strip. |
KM22 VIADUCTO LA ESTADIA | Photogrammetry + center panorama + whole-viaduct top-down + column photographs + general perspectives. |
Plant-plan check: the PDFs print these stations with a 700 km prefix. Normalized to the agreed chainage convention, KM20 S/N spans approximately KM20+783.45–KM21+001.45 (218 m; four interior support-column positions), and La Estadía spans KM22+267.75–KM22+404.25 (136.5 m; two interior support-column positions). FlightHub specifies 2,504.46 m and 2,544.46 m in EGM96 (FlightHub ASL height reference); those values are mission heights, not the plan’s deck elevations. Confirm actual TOP ASL and clearance on site.
Corridor overlap and scope
The supplied corridor export retains its 80 m left / 70 m right extensions. Verify image footprint continuity with adjacent coverage; mission overlap values do not confirm ties to other dates by themselves.
261002 · FridayKM22–KM24+500 · KM24+500–KM27
Two corridor photogrammetry missions
Complete both supplied FlightHub strips; field order may change with access and conditions. Combined mapping flight-line export is approximately 38.22 km. The KM24+500 start/end area overlaps the preceding strip; check ground-feature continuity during processing.
75 m real-time surface following
80/80 overlap · 55 m left / right extensions · 21 m/s.
Flight-line export: 15.47 km.
75 m real-time surface following
80/80 overlap · 60 m left / right extensions · 21 m/s.
Flight-line export: 22.75 km.
Field sequence and delivery labels
Check access, visibility, RTK/PPK status and the planned extensions before launching each strip. Keep the missions as separate exports and confirm continuous ground coverage across the KM24+500 join.
| Mission / delivery label | Capture |
|---|---|
KM22-KM24+500 | Corridor photogrammetry strip from the supplied FlightHub mission. |
KM24+500-KM27 | Corridor photogrammetry strip from the supplied FlightHub mission. |