主要特点：高性能,167频道,GPS+北斗双卫星定位
The TG621S-BD is a state-of-the-art 167-channel global navigation receiver module capable of using Beidou and GPS satellite signals. It also works with augmentation satellite systems such as QZSS and SBAS (WAAS, EGNOS, MSAS, GAGAN).
The TG621S-BD can provide dual-satellite navigation system positioning capability to offer more than the number of satellites available for GPS-only position fix. The increased satellite number offers superior performance in challenging urban canyon and multipath environments. It is capable of tracking up to 28 satellite signals for increased positioning accuracy.
The TG621S-BD contains SkyTraq Venus 8 positioning engine inside, featuring high sensitivity for indoor fix, low power consumption, and fast TTFF. The superior -148dBm cold start sensitivity allows it to acquire, track, and get position fix autonomously in difficult weak signal environment. The receiver’s -165dBm tracking sensitivity allows continuous position coverage in nearly all application environments. The high performance signal parameter search engine is capable of testing 16 million time-frequency hypotheses per second, offering industry-leading signal acquisition and TTFF speed.
The receiver can operate in GPS-only, Beidou-only, and Beidou + GPS modes under user selection.
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Receiver Type |
L1 C/A code, 167-channel Venus 8 engine |
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Accuracy |
Position 2.5m CEP |
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Velocity 0.1m/sec |
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Time 10ns |
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Startup Time |
1 second hot start under open sky |
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< 29 second warm start under open sky (average) |
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29 second cold start under open sky (average) |
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Reacquisition |
1s |
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Sensitivity |
-148dBm cold start |
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-160dBm re-acquisition |
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-165dBm tracking |
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Multi-path Mitigation |
Advanced multi-path detection and suppression |
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A-GPS |
7-day sever-based AFPS(ROM and Flash type) |
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Self-aided ephemeris estimation（Flash type） |
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Update Rate |
1/2/4/5/8/10/20/ Hz for GPS/ BeiDou (1Hz default) |
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Dynamics |
4G (39.2m/sec2) |
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Operational Limits |
Altitude < 18,000m or velocity < 515m/s |
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Serial Interface |
3.3V LVTTL level |
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Protocol |
NMEA-0183 V3.01 Skytraq binary |
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9600 baud, 8, N, 1 |
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Datum |
Default WGS-84 |
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User definable |
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Input Voltage |
3.3V DC +/-10% |
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Input Current |
40mA Tracking 45mA Acquisition |
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Dimension |
16.0mm L x 12.2mm W |
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Weight: |
1.6g |
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Operating Temperature |
-40Oc ~ +85oC |
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Storage Temperature |
-55 ~ +100oC |
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Humidity |
5% ~ 95% |
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