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🎯 Control Network
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STEP 1
Design Network
STEP 1 — DESIGN THE NETWORK Plan your control point locations. Consider: • Coverage of survey area • Intervisibility between points • Access for future use • Redundancy (multiple connections) Minimum: • 2 known reference points • 3+ new control points • Multiple connections between points
STEP 2
Establish Stations
STEP 2 — ESTABLISH MARKERS Place permanent markers in the field. Marker types: • Concrete pillars (permanent) • Steel pins (semi-permanent) • Temporary marks (construction) Mark clearly and record positions.
STEP 3
Observe Network
STEP 3 — OBSERVE ALL CONNECTIONS Measure between all points. For each observation: • Horizontal angle (multiple sets) • Slope distance • Vertical angle Connect every point to multiple others for redundancy.
STEP 4
Adjust Network
STEP 4 — ADJUST THE NETWORK Apply least squares adjustment. METARDU features: • Basic traverse adjustment (Bowditch) • Network adjustment (coming soon) For now: • Run closed traverses between points • Use weighted average of multiple runs
STEP 5
Document & Save
STEP 5 — DOCUMENT CONTROL Save and report your control network. In METARDU: → Mark points as Control → Set control_order (primary/secondary) → Generate report Report should include: • Point coordinates • Description of markers • Accuracy assessment