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Santa Ana River – EDM Baseline

Conducted in February 2006, this study aimed to measure distances between stable monuments using RTK measurements compared to record data. The project location spanned OEOC, WHYT, SCMS, and CAT2. Equipment included a Voodoo Stick and Leica instruments for precise data collection.

mohammad-jennings
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Santa Ana River – EDM Baseline

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  1. Santa Ana River – EDM Baseline OCRTN – RTK Field Test February 2006

  2. Objective: • To measure the horizontal distance and vertical difference between 4 stable monuments • To position monuments from 4 different Base Stations with different baseline lengths • Compare RTK measurements to record measurements

  3. Project Location

  4. OEOC WHYT13km/8 miles 27km/17 miles

  5. SCMS CAT246km/29 miles 72km/45 miles

  6. ProjectLocation

  7. RTK Procedures • 2 Independent occupations on each station • Each independent occupation consists of two 50 epoch measurements (about 1 minute) • Independent occupations occur on different days and different times of the day (+/- 3 hours)

  8. Equipment Used: • One Voodoo Stick • Leica SR530 receiver • Leica AT502 antenna • CDMA Airlink modem • Fixed 2 meter pole w/ 8’ bubble

  9. # of Independent Occupations • Compare coordinates computed for each station and from each base station to the RTK average coordinate: Station OEOC(8.2 mi) WHYT(16.6 mi) SCMS(28.7 mi) CAT2(44.7 mi) A 2 2 2 2 B 2 2 1* 1* C 2 2 1* 1^ D 2 2 1* 2 Wait at least 3 minutes to achieve fix *= could not achieve fix on day 1 ^ = could not achieve fix on day 2

  10. Relative - Test Results: • Compare Historic (record) horizontal distance and vertical difference to RTK coordinate differences for stations: Pt to Pt Record Horiz Dist (ft) Record Vert Diff (ft) A to B 371.967’ +0.977 B to C 2702.579’ +8.324 C to D 2769.172’ +10.895

  11. SCMS single occupation on C and D

  12. SCMS and CAT2

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