Introduction

Our colleague Frank Núñez demonstrates a Trimble R12i GNSS system in a very common operation, showing productivity gains without sacrificing precision, based on two fundamental elements of Trimble technology: ProPoint and TIP.

 

Trimble ProPoint

Trimble ProPoint is the new real-time processing engine used by R12i and other Trimble GNSS receivers. Its function is to guarantee the best possible precision based on intensive signal processing. This feature allows measurements in environments that are very complex for conventional satellite observation: under trees, at the foot of a slope or wall, among other possibilities.

Fig 1. Transition of accuracies based on different satellite geometries and local conditions

 

TIP (Trimble Inertial Platform)

TIP is the R12i's ability to measure at an incline regardless of the antenna's position. Its use allows for faster position determination without losing representativeness. A clear example of this is in boundary lines where the pole cannot be placed vertically due to the antenna's interaction with the wall, fence, slope, or boundary.

However, TIP's main virtue is not just tilted measurement, but rather, together with ProPoint, it provides optimized observation in terms of dynamically and reliably finding the best possible satellite window.

Fig 2. Inclined measurement scenarios using TIP

     

    Practical experience

    Frank measured a property to determine its area. This task requires observing different positions that describe the perimeter to then calculate the area. Both Trimble Access (field software) and Trimble Business Center allow this operation, depending on the urgency with which the final data is required.

    Fig 3. Area determination in Trimble Access

     

    Some statistics

    ⨭Number of points determined: 39

    ⨭Total survey time: 14 minutes and 3 seconds (1 point every 21.6 seconds)

     

    ⨭Mean horizontal accuracy (95%): 0.035 m

    ⨭Mean vertical accuracy (95%): 0.045 m

    Fig 4. 95% accuracies for horizontal and vertical coordinate determination

     

    ⨭Average number of satellites observed: 22.5

    Fig 5. Number of satellites observed in each determination

     

    ⨭Average compensated inclination distance: 0.902 m

    Fig 6. Compensated distance for each inclined measurement

     

    About Frank Nuñez

    Instagram: @fr4nknunez
    YouTube: https://youtube.com/user/fnunez31
    TikTok: frank.nunez