viDoc®
Technical Data
Included in delivery
viDoc® for smartphone
> GNSS antenna 36dbi transmit power
> Front- & ground laser
> USB-C charging cable
> viDoc® app
> Quick Start Guide
The viDoc® is compatible with:
IOS: iPhone XR, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone 12, iPhone 12 Pro, iPhone 12 Pro Max, iPhone 13, iPhone 13 Pro, iPhone 13 Pro Max, iPhone 14 Pro, iPhone 14 Pro Max , iPad Pro 11
Android: Samsung, Galaxy S21, Samsung Galaxy S21 Plus, Samsung Galaxy S21 Ultra, Samsung Galaxy S22, Samsung Galaxy S22 Plus, Samsung Galaxy S22 Ultra, Google Pixel 6, Google Pixel 6 Pro, Huawei P20 Pro, Huawei Mate 20 Pro, Huawei P30 Pro
viDoc® for smartphone
| Measurements | 153x72x19mm |
| Weight | 242g |
| Temperature range | –5 to +35°C |
| Humidiy | 5–95% (not condensing) |
viDoc® tablet
(version 2021/2022)
| Measurements | 253x184x29mm |
| Weight | 485g |
| Temperature range | –5 to +35°C |
| Humidiy | 5–95% (not condensing) |
GNSS-Antenne
| |
| Measurements | 55.6mm x 27.5mm |
| Weight | < 19g |
| Temperature range | –40 up to +80°C |
| Humidiy | Up to 95% |
| Polarization | RHCP |
| Satellite signals | GPS: L1/L2 BeiDou: B1/B2/B3 Galileo: El/E5b GLONASS: G1/G2 |
| Coverage | 360° |
| Supply voltage | 3 - 16 VDC |
| Power consumption | < 35mA |
| Gain | 36 ± 2dB, optional with 40 ± 2dB |
| Noise figure | < 1,5dB |
| V.S.W.R. | < 2,0 |
Laser
The downward laser point can be used in PIX4Dcatch App for Single Point Measurement.
The rear laser can only be used with the viDoc® App (not included).
| Measurement accuracy | ± 3 mm (depending on lighting conditions, materials and angle of impact) |
| Measuring range | Ground laser: 0.5 – 30m Front laser: 0.5 – 15m |
| Laser class | 2 |
| Laser type | 635 nm, < 1 mW |
| Measurement times | 0,1 up to 4 sec. |
| Supply voltage | 2,5 - 3,3 V |
| Operating temperature | 0 up to 40 °C |
Performance specifications
Constellation-independent, flexible signal tracking, improved positioning under challenging environmental conditions<sup>1</sup> with multi-satellite use. Reduced downtime in the event of loss of signal (up to 5 seconds).
The following satellite signals are used simultaneously:
GPS: L1C/A (1575.42 MHz); L2C (1227.60 MHz)
BeiDou: B1I (1561.098 MHz); B2I (1207.140 MHz)
Galileo: E1-B/C (1575.42 MHz); E5b (1207.140 MHz)
GLONASS:
L1OF (1602 MHz + k*562.5 kHz, k = –7,…, 5, 6)
L2OF (1246 MHz + k*437.5 kHz, k = –7,…, 5, 6)
QZSS
Positioning services2
| Device type | Multi-band GNSS high precision receiver |
| Accuracy of pulse signals | RMS 30ns 99 % 60ns |
| Frequencies of pulse signals | 0,25Hz up to 10MHz |
| Convergence time | RTK < 10sec |
| Static survey | POSITION 1cm + 1ppm HIGHT 1cm + 1ppm |
| RTK run up/ramp up time3 | Cold start (sec) up to 90 sec At operating temperature up to 8 sec |
| RTK-Position accuracy RMS4,5 (repeatability for static measurement) | POSITION 7mm at 15min HIGHT 8mm at 15min POSITION 15mm at 30min HIGHT 21mm at 30min |
| Speed accuracy | 0,05 m/s |
| System limits | HEIGHT 5.000 m Acceleration < 4 g Speed 500 m/s |
| IMU | Prepared |
Power supply
| Smartphone operating times in continuous operation: | |
| receive and transmit | Smartphone max. 6 hours iPad max. 8 hours |
| with active laser module | Smartphone max. 5 hours iPad max. 6 hours |
| under real conditions | Smartphone max. 6 hours iPad max. 8 hours |
| battery pack | Smartphone LiPo, 2 x 2,400mAh, 7.4Wh, 3.7V iPad LiPo, 2 x 3,200mAh, 7.4Wh, 3.7V |
Model accuracy6
absolute position and height (relativ)
| with EXIF data | < 10 cm |
| with CSV data | < 5 cm |
| with CSV+GCP data | < 2 cm |
| with EXIF+GCP data in cloud processing | < 2 cm |
| with PIX4Dcatch App | < 5 cm |
| with viDoc® App | < 10 cm |
1 Challenging GNSS environments are places where there is sufficient satellite availability for the receiver as a prerequisite for minimum accuracy, but where the signal can be partially shaded or reflected by trees, buildings and other objects. The actual results may vary due to the location and atmospheric activitiy, due to strong flickering, the condition and availability of the satellite system and the degree of multipath scattering and signal coverage.
2 Precision and reliability can be affected by certain factors such as multipath scattering, obstacles, satellite geometry and atmospheric conditions. The stated specifications require stable setups, a clear view of the sky, an environment free of electromagnetic interference and multipath scattering, optimal GNSS configurations and, in addition, surveying methods as they are usually used for surveys of the highest order with occupation times adapted to the base lengths. Baselines over 30 km in length require ephemeris accuracy and occupation times of up to 24 hours may be necessary to achieve high-precision static specification.
3 Accuracies may be affected by atmospheric conditions, multipath signals, shadowing and satellite geometry. The reliability of the initialisation is permanently transmitted to ensure the highest quality. Compensations are solved on the software side.
4 RMS efficiency is based on repeatable on-site measurements. The achievable accuracy and the initialization time can vary depending on the type and performance data of the receiver and antenna, the geographic location of the user, atmospheric conditions, scintillation intensity, the status and availability of the GNSS constellation, the degree of multipath scatteing and the proximity to shading (e.g. from large trees and buildings) vary.
5 Measurement iterations based on 1 minute. Better position accuracy through error rate filtering.
6 The models were mapped with a viDoc® Rover and an iPhone 13 Pro. The model accuracy depends on the environmental conditions and the calculation settings. The results may vary depending on the software provider.