GPS Receiver is ultra-precise GNSS measurement engine, new, fast, self-checking RTK algorithms, and a comprehensive, self-explanatory user interface. The Topcon FC-250 is a model of the next generation in field control technology, delivering a package designed for optimum capability, convenience, and. They designed the FC-250 field controller to provide the functionality surveyors demand and the durability they need for their work on the field. U TU Live Webinar Series will be recorded and available for playback anytime on the TU web site.Topcon Positioning Systems understands that. The goal of Topcon University is to help you unlock the power that Topcon has built into its solutions.
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SmartTrack+ GNSS technology/SmartTrack GPS technologyGPS SYSTEM is high precision GNSS (Global Navigation Satellite System) receivers, supporting both GPS and GLONASS and advanced processing algorithms and software.Continuously checking provides the highest possible reliability. Image Master software and ground-surveyed control points.System integrates with the following X-function features:The following features are provided to ensure all the flexibility, power and performance needed for every type of GNSS application: PowerPoint PPT presentation free to viewfrom a protocol where oblique aerial photographs were processed into 3D models using Topcon.
More satellites mean higher productivity, accuracy and reliability.System acquires satellites within seconds, is ideal in urban canyons and obstructed areas where other receivers often fail. The System measurement engine tracks all available GNSS signals (L2C and GLONASS). Initialize within seconds and survey in obstructed areas with a GPS sensor or increase productivity with.This measurement engine now utilizes two global navigation satellite systems increasing the number of tracked satellites. System processes GPS and GLONASS measurements simultaneously for centimeter-accuracy, 20 Hz RTK at 30 km and more.
Accuracies: Kinematic (horizontal 10mm +1ppm vertical:20mm +1ppm) All in the minipack for GIS and seismic surveys. For geodetic control and reference stations. RTK pol - Carbon fiber or aluminum pole with adjustable,ergonomic handgrip. Pole and minipack minimum weight in your hand when surveying for hours on end. Ideal for stakeout on construction sites and other demanding conditions.
These observation windows should satisfy the following conditions:A) No SV s was used in the assessment of geometry (based on applicable precision indicators like GDOP) that was expected to be unhealthy during the project.B) The minimum elevation angle for which data were accepted was 15 degrees as shown in Figure 2C) The observation period had an adequate duration such that sufficient phase data remains available in the final solution to satisfy the requirements.D) Minimum 5 satellites for at least 70% of the observation period.E) Experience has shown that observation periods with VDOP’s of less than 4 tend to satisfy both elevation and coordinate precision requirements as they are normally associated with HDOP values well below 4.This module processes all types of GPS and GLONASS raw data. Network Adjustment completes your work, perfectly.Leica Geo systems monitoring software uses standard communication and data interfaces for flexibility and customization and has sophisticated multi-sensor measurement scheduling, data management and processing, analysis and messaging capabilities.Observation windows and satellite geometry:We ensured that the observation windows and satellite (SV) configurations were chosen so as to achieve a final solution that can guarantee the accuracy’s of the coordinates should be determined within the positioning tolerances. It will adjust 3D GPS networks, 2D TPS traverse nets, 3D TPS traverse and height networks, 1D level line networks, as well as combined GPS, TPS and level networks.A further advantage of Network Adjustment is that it allows the user to design and analyze networks in order to test their suitability before going into the field, establishing markers and taking measurements.
In the event that a control point is occupied on two successive observation periods, the antenna was re-leveled and re-centered before the second observation occurs.Based on the static method of data acquisition, the observation period had an adequate duration such that sufficient phase data that were collected should satisfy the requirements of ambiguity fixing process.The (float and fix) Carrier phase ambiguities were determined using double difference measurements in the processing. Data was logged from all visible satellites above the 15 degree elevation cut off.All control points (existing and new) used in the survey was independently occupied on two occasions during the course of the survey. For critical lines or special investigations, processing can be manually controlled, in which case advanced users have ample scope to set parameters and use their own processing scenarios.Results Manager contains a range of graphical analysis tools and report logs that allow the results to be viewed and examined in depth before they are accepted and stored.Time-tagged pseudo-ranges and continuously integrated carrier wave beat phase differences was measured simultaneously at all receivers and was recorded at intervals not greater than 15 seconds. For routine baseline computations, processing can be set to run fully automatically using default settings.
Quality parameters to prove that criteria for fixing integer ambiguities have been met. The root mean square (RMS) of the residuals of the applicable processing solutions. The number of cycle slips which were detected and fixed in the accepted data. The covariance matrix of the coordinate components of the spatial baseline vector. The coordinate components of the spatial baseline vector.
The maximum allowable error in the baselines in the minimally constrained adjustment was not exceeding 1cm. The standard deviations of the adjusted baselines were checked against the company specified tolerance and corrective action taken if this tolerance is exceededIn addition to criteria stated above the following criteria were met for data to be acceptable: The weight matrix associated with each baseline in the least squares adjustment was the inverse of its full covariance matrix.
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