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SKM81 is an integrated module of a positioning module + antenna, supporting GPS / BDS / GLONASS, model score SKM81B, SKM81BC, SKM81D, SKM81DC!
Read More| Chip | MT3333 |
| Receiver type | GPS,BDS,GLONASS |
| Dimension(L×W×H) | 18*18*6.3（mm） |
SKM81 is a positioning module + antenna integrated module, supports GPS/BDS/GLONASS, model number SKM81B, SKM81BC, SKM81D, SKM81DC! SKM81B, SKM81BC use MT3337 chip, SKM81D, SKM81DC use MT3333 chip. Shape: SKM81B is the same as SKM81D, SKM81BC is the same as SKM81DC!
It is based on the high-performance features of the single-chip architecture, Its –165dBm tracking sensitivity extends positioning coverage into place like urban canyons and dense foliage environment where the GNSS was not possible before. The small form factor and low power consumption make the module easy to integrate into portable devices like PNDs, mobile phones, cameras and vehicle navigation systems.
Features：
◆GPS/GLONASS/BD/QZSS reseiver
◆ Ultra high sensitivity: -165dBm
◆Extremely fast TTFF at low signal level
◆Built-in 12 multi-tone active interference canceller
◆ Ultra low power consumption
◆ ±10ns high accuracy time pulse (1PPS)
◆ Advanced Features: AlwaysLocate; AIC; EPO;EASY
◆SBAS (WAAS,EGNOS,MSAS,GAGAN)
◆ Small form factor: 18x18x6.3mm
◆ RoHS compliance (Lead-free)
◆ FCC,CE compliance
| Parameter | Specification |
| Receiver Type | GPS,GLONASS,BD |
| Sensitivity | Tracking：-165dBm Typical Acquisition：-148dBm Typical |
| Accuracy | Position：3.0m CEP50 without SA(Typical Open Sky) Velocity：0.1m/s without SA Timing (PPS)：10ns RMS |
| Acquisition Time | Cold Start：23s(Typical Open Sky) Warm Start：2-3s Hot Start：1s Re-Acquisition：<1s |
| Assisted GPS support | EPO |
| Power Consumption | Tracking：25mA Acquisition：30mA |
| Navigation Data Update Rate | Max 10Hz Default 1Hz |
| Operational Limits | Altitude：Max 18,000m Velocity：Max 515m/s Acceleration：Less than 4g |
◆LBS (Location Based Service)
◆PND (Portable Navigation Device)
◆Vehicle navigation system
◆Mobile phone
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