Setting up a Nautix X8 Wi-Fi

Setting up Wi-Fi on the X8 is not difficult. But it is different than most other data collectors.

Continue reading for my notes with pictures [ NautixX8_WiFi_Setup … ]

 

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NGS OPUS Won’t Process my GPS Observation File!

Thesis:

I collected static data with my (xyz) GPS receiver, just like I always do. It was in a wide open area, but when I submit data it reports that it cannot process the file or the vectors because they are noisy or fewer than 3 useable stations remain.

Answer:

There are a lot of possible answers, but in this case the error message may be correct: “There are no nearby CORS stations WITH data.”

Let’s look at an example. [ Continue Reading …  OPUSWontProcess_R001 ]

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Checking the OS Version on a Surveyor 2

How do you check for the current OS Version on a Carlson Surveyor 2 (or Mini-2)?

[ OSVersionOnSurveyor2_R001 ]

 

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Example Metadata for GPS Job

Wow, there has been a lot of ink spilt on North Arrows and projection declarations for jobs based on GPS data.

Since I am not a licensed surveyor, my opinion does not count. But I get asked all the time. So here is an example of what I might do as a minimum:

I, Joe Blow, do hereby certify that I am a Professional Land Surveyor, holding 
certificate 99999 as prescribed by the State of Chaos.
I further certify that I have prepared the diagram represented herein and that
the same is an accurate representation of a survey, and was conducted under
my direct supervision.

Benchmark
  The Benchmark for this project is CP201

Coordinate System and Projection Information
  Horizontal Datum = NAD83, North American Datum 1983,
                     2011 Realization 2010.0 Epoch
  GPS Control = Maine DOT Virtual Reference System (VRS)
  Vertical Datum = NAD88, North American Vertical Datum of 1988, 
                   GPS Derived
  GEOID (used for GPS Derived Heights) = GEOID12B (NGS)
  Ellipsoid = GRS1980
  Projection = Maine West NAD83 State Plane Coordinates 
  Distance = US Survey Feet (1 Meter = 3937/1200 US Survey Feet)

Distances
  Distances are Grid distances converted to Ground using a Combined Scale Factor
  The Combined Scale Factor (0.99996067) for this project was derived at
    Control Point 201
          CP201 = 44 2 55.34000 N 69 58 23.05000 W NAD83
          Ellipsoid Height 215.562 ft
          GEOID            -57.100 ft
          Ortho Height     272.662 ft [NAVD88 (Computed using GEOID12B)]

    Example: 9,857.824 SFeet Grid = 9,858.206 SFeet Ground

Bearings
    Bearings are with respect to State Plane Grid North
    Declination at
       TN-SP  0°  8’  4.57”
       TN-MN 15° 36’ 37” (2017 Estimate)

narrow

{My Seal}
Joe Blow
Chaos PLS Number 99999

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Reusing Jobs in One Projection in a New Job with a Different Projection

Let’s assume that we have an .RW5 (Raw File) for a job in one projection (a custom projection) and we want to reuse ‘SOME’ of the coordinates and GPS shots in this job, in a completely NEW job with an alternate projection.

Thesis: I have hundreds of control points and boundary shots for a job that were taken in a custom LDP. Now I want to work on an adjoining site, but in a new projection (or perhaps a standard State Plane Projection.)

If we assign the previous file as the control file of new job with a completely different projection, then we can import the RAW GPS positions to set a base, and we can use the raw data as the GPS coordinates for a localization.

Continue Reading > survce_reusingcoordintesbetweendifferentjobswithdifferentprojections_reva

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Connecting a SP80 Receiver to a NTRIP/DIP Mount Point with Wi-Fi and SurvCE / FAST Survey

The SP80 is billed as ‘the most connected receiver’ and without question, it is.

The internal Wi-Fi transmitter makes it possible to connect a SP80 directly to a Mi-Fi, which reduces the amount of data on the Bluetooth channel.

Let’s look at a comparison between the traditional ‘Data Collector Internet’ (DCI) configuration vs. the SP80 method  [ … sp80-survce_wifi_connection … ]

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Setting the HI in SurvCE for a Focus35 Robot

There are two measure-up indices on a Spectra Precision Focus-30 / Focus-35 Robotic Total Station:

f351

The lower tape hook is for ‘Slant Height’. The top dot & cross is for ‘Vertical Height’.

If you enter a ‘Slant Height’, the data collector shows you the equivalent ‘Vertical Height’:

f352

(Sorry, the picture is faded…to the right of ‘Vertical’ there is a 5.1600) If I measure 4.650′ to the tape hook then SurvCE computes 5.160′ to optical center.

Alternatively I could select the ‘Vertical’ radio option and then enter 5.16 directly.

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