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Powerful Data Logging Capability
The EX-1 can simultaneously record
data in the following formats, supporting data update rates
of up to 10 Hz.
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NMEA
NMEA, or National Marine Electronics
Association, is the standard protocol for GNSS device
communication. It includes comprehensive positioning
information such as coordinates, time, speed, heading,
altitude and
satellite data.
* Supports NMEA 0183 version
4.11.
UBX
UBX is a proprietary data protocol by
u-blox. It includes complete raw satellite reception data,
which can be used for Post-Processed Kinematic (PPK)
analysis.
RTCM
RTCM, or Radio Technical Commission
for Maritime Services, includes differential Corrections,
satellite status information, reference station data, satellite ephemeris data, and receiver control
and configuration information. Together with raw data, it
enables PPK post-processing on stored data.
* Supports RTCM 10403.3
version.
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Multiple Connection Options
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Bluetooth Channel 1
Supports Bluetooth connection to NTRIP
Caster, such as
GeoAstra, providing the EX-1 with real-time
kinematic correction data. |
Bluetooth Channel 2
Supports Bluetooth connection to
mobile terminal devices, providing real-time navigation data
to mobile devices. |
Wired Channel
Supports USB connection to a computer,
providing rich positioning data suitable for data
collection, surveying, and other applications. |
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* Each Bluetooth channel supports both SPP and BLE modes.
All three channels can connect simultaneously. |
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EX-1 Field Test Performance
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1. RTK Mode - Static Testing
Objective: Evaluate whether the
positioning accuracy of the EX-1 in a stationary position
meets the nominal value.
Duration: 1 hour | Update Rate: 1 Hz | Date: UTC
2024-07-24 15:37:16 ~ 16:37:15
Method: The receiving antenna was completely stationary,
collecting 3,600 continuous track points to calculate
the CEP value based on the average position.
Conditions: Conducted on a rooftop with open sky,
approximately 100 meters RTK baseline distance.
Click to
download the original data recorded by the EX-1>
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Conclusion: The CEP (50%) accuracy was
0.002633m, exceeding the nominal value of 0.01m. This means
that half of the positioning points fell within a circle
centered on the average position, with a radius of
0.002633m. The CEP (100%) accuracy also achieved an
excellent 0.010303m. |
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2. RTK Mode - Dynamic Testing
Objective: Evaluate the positioning
accuracy of the EX-1 during movement.
Duration: 96 seconds | Update Rate: 1 Hz | Date: UTC
2024-07-24 20:55:09 ~ 20:56:44 | Laps: 1 lap
Method: The phase center of the antenna was placed at the
edge of a disk with a diameter of only 40 cm, rotating at a
speed of approximately 90 seconds per lap (linear speed of
about 1.4 cm/second).
Conditions: Conducted on a rooftop with open sky,
approximately 100 meters RTK baseline distance.
Click to
download the original data recorded by the EX-1>
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The left and right images were recorded synchronously during
the test. |
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Conclusion: Recording ultra-low-speed
motion tracks presents significant challenges for RTK
devices. In this test, the EX-1's motion track
coincided with a circle of 20 cm radius in the target
diagram, confirming the disk's radius as 20 cm.
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3. RTK Mode - Dynamic Stability Testing
Objective: Evaluate the tracking
accuracy of the EX-1 during movement.
Duration: 927 seconds | Update Rate: 1 Hz | Test Time: UTC
2024-07-22 16:36:09 ~ 16:51:35 | Laps: 10 laps
Method: Same as the "Dynamic Testing," recording the track
over ten continuous laps.
Conditions: Same as the "Dynamic Testing."
Click to
download the original data recorded by the EX-1>
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The above image shows a close-up of the track (1
cm/div).
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Conclusion: The consistency of the
track during continuous laps was excellent, with a
width maintained at around 1 cm throughout. |
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4. SBAS Mode - Stand-alone Static Testing
Objective: Evaluate whether the
positioning accuracy of the EX-1 in a stationary position
meets the nominal value.
Duration: 1 hour | Update Rate: 1 Hz | Date: UTC
2024-08-22 23:16:06 ~
2024-08-23 00:16:05
Method: The receiving antenna was completely stationary,
collecting 3,600 continuous track points to calculate
the CEP value based on the average position.
Conditions: Conducted on a rooftop with open sky,
achieve differential satellite positioning throughout.
Click to
download the original data recorded by the EX-1> |
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Conclusion: The CEP (50%) accuracy was
0.240130m, exceeding the nominal value of 0.3m. |
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