Quectel QLM29HCAA-GM Dual-Band Multi-Constellation Smart GNSS Antenna
The Quectel QLM29HCAA-GM is a dual-band, multi-constellation smart GNSS antenna designed for positioning and navigation applications. It supports GPS, QZSS, GLONASS, Galileo, BDS, and NavIC signals while integrating dead reckoning (DR) functionality with an integrated IMU for positioning support when GNSS signals are unavailable.
The antenna supports GPS/QZSS L1 C/A and L5, GLONASS L1, Galileo E1 and E5a, BDS B1I and B2a, and NavIC L5. It supports four concurrent GNSS constellations plus QZSS, with GPS, GLONASS, Galileo, BDS, and QZSS available as the default GNSS constellation configuration. SBAS support includes WAAS, EGNOS, MSAS, and GAGAN.
The QLM29HCAA-GM provides autonomous horizontal positioning accuracy of 1m and integrated DR capabilities. For four-wheel vehicles, the DR position error is less than 2% of distance traveled using ADR and less than 3% using UDR without GNSS. It also provides 0.03m/s velocity accuracy and 20ns RMS accuracy for the 1PPS signal.
The antenna offers acquisition sensitivity of -145dBm, tracking sensitivity of -165dBm, and reacquisition sensitivity of -157dBm. Its PVT update rate supports 1Hz, 2Hz, 5Hz, and 10Hz, while raw data updates reach up to 100Hz for the IMU. These capabilities make it suitable for positioning and navigation systems requiring multi-constellation GNSS and DR functionality.
The QLM29HCAA-GM uses an active integrated antenna and provides NMEA 0183 and RTCM 3.x protocol support. Optional RS-232 and USB interfaces provide additional connectivity options. With a 5m cable, IP67 protection, and an operating temperature range of -40°C to +85°C, it is suitable for demanding outdoor positioning applications.
Main Features
- Dual-band multi-constellation smart GNSS antenna
- GPS/QZSS, GLONASS, Galileo, BDS, and NavIC support
- Integrated DR with IMU
- Autonomous horizontal positioning accuracy: 1m
- Up to 4 concurrent GNSS constellations + QZSS
- GNSS tracking sensitivity: -165dBm
- PVT update rates up to 10Hz
- NMEA 0183 and RTCM 3.x protocol support
- IP67 protection with -40°C to +85°C operating temperature
Specifications:
| Model |
QLM29HCAA-GM |
| Mechanical |
|
| Dimensions |
72.0 × 57.6 × 22.3 mm |
| Weight |
Approx. 220 g |
| Temperature |
|
| Operating Temperature |
-40 °C to +85 °C |
| Storage Temperature |
-40 °C to +105 °C |
| GNSS Features |
|
| Supported Bands |
GPS/QZSS: L1 C/A, L5; GLONASS: L1; Galileo: E1, E5a; BDS: B1I, B2a; NavIC*: L5 |
| Default GNSS Constellations |
GPS + GLONASS + Galileo + BDS + QZSS |
| Number of Concurrent GNSS |
4 + QZSS |
| SBAS |
WAAS, EGNOS, MSAS and GAGAN |
| Function(s) |
DR (integrated IMU) |
| Horizontal Position Accuracy |
Autonomous: 1 m |
| DR Position Error (ADR) |
4-wheeler: < 2% of distance traveled without GNSS |
| DR Position Error (UDR) |
4-wheeler: < 3% of distance traveled without GNSS |
| Velocity Accuracy |
0.03 m/s |
| Accuracy of 1PPS Signal (RMS) |
20 ns |
| Quick Positioning After Power Off-On |
Supported |
| TTFF (with AGNSS) |
Full Cold Start: 5 s |
| TTFF (Without AGNSS) |
Full Cold Start: 26 s; Warm Start: 16 s; Hot Start: 1 s |
| Sensitivity |
|
| Acquisition |
-145 dBm |
| Tracking |
-165 dBm |
| Reacquisition |
-157 dBm |
| Dynamic Performance |
|
| Maximum Altitude |
10000 m |
| Maximum Velocity |
500 m/s |
| Maximum Acceleration |
4g |
| PVT Update Rate |
1 Hz / 2 Hz / 5 Hz / 10 Hz |
| Raw Data Update Rate |
GNSS: 1 Hz; IMU: 100 Hz (max.) |
| Certifications |
|
| Regulatory |
Europe: CE |
| Others |
RoHS |
| Interfaces |
|
| RS-232 (Optional) |
× 1; Default: 115200 bps |
| USB (Optional) |
× 1 |
| Protocols |
|
| Protocols |
NMEA 0183 / RTCM 3.x |
| Antenna |
|
| Antenna Type |
Active integrated antenna: (45 × 45 × 6) mm + (40 × 40 × 4) mm |
| Electrical Characteristics |
|
| Supply Voltage Range |
4.0–5.5 V, typ. 5.0 V |
| Power Consumption (@ Default GNSS Constellations, 5.0 V) |
39 mA (195 mW) |
| Anti-Static Properties |
|
| Energized State |
Contact ±8 kV, Air ±15 kV |
| De-energized State |
Contact ±15 kV, Air ±25 kV |
| Other Features |
|
| Cable Length |
5 m |
| IP Code |
IP67 |
