IC-Lora-GPS_HAT
The Lora/GPS HAT is based on the SX1276/SX1278 transceiver. The add-on L80 GPS (Base on MTK MT3339) is designed for applications that use a GPS connected via the serial ports to the Raspberry Pi such as timing applications or general applications that require GPS information.
The Lora/GPS HAT is based on the SX1276/SX1278 transceiver. The add-on L80 GPS (Base on MTK MT3339) is designed for applications that use a GPS connected_x000D_ via the serial ports to the Raspberry Pi such as timing applications or general applications that require GPS information.
_x000D_The transceivers of the Lora/GPS HAT feature the LoRa long range modem that provides ultra-long range spread spectrum communication and high interference_x000D_ immunity whilst minimising current consumption. The Lora/GPD HAT can achieve a sensitivity of over -148dBm using a low-cost crystal and bill of materials._x000D_
The high sensitivity combined with the integrated +20 dBm power amplifier yields industry leading link budget making it optimal for any application_x000D_
requiring range or robustness. LoRa also provides significant advantages in both blocking and selectivity over conventional modulation techniques,_x000D_
solving the traditional design compromise between range, interference immunity and energy consumption._x000D_
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This board can calculate and predict orbits automatically using the ephemeris data (up to 3 days) stored in internal flash memory, so the HAT can fix position_x000D_
quickly even at indoor signal levels with low power consumption. With AlwaysLocate™ technology, the Lora/GPS HAT can adaptively adjust the on/off_x000D_
time to achieve a balance between positioning accuracy and power consumption according to the environmental and motion conditions. The GPS also supports_x000D_
automatic antenna switching function. It can achieve the switching between internal patch antenna and external active antenna. Moreover, it keeps positioning_x000D_
during the switching process.
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Features:
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- Frequency Band: 868 MHZ/433 MHZ/915 MHZ(Pre-configure in factory)
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- Low power consumption
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- Compatible with Raspberry Pi 2 Model B/Raspberry Pi 3.
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- LoRa Modem
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- FSK, GFSK, MSK, GMSK, LoRa™and OOK modulation
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- Preamble detection
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- Baud rate configurable
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- Built-in temperature sensor and low battery indicator
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- Excellent blocking immunity
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- Automatic RF Sense and CAD with ultra-fast AFC
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- Support DGPS, SBAS(WAAS/EGNOS/MSAS/GAGAN)
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- GPS automatic switching between internal patch antenna and external active antenna
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- PPS VS. NMEA can be used in time service
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- Support SDK command
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- Built-in LNA for better sensitivity
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- EASY, advanced AGPS technology without external memory
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- AlwaysLocate, an intelligent controller of periodic mode
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- GPS FLP mode, about 50% power consumption of normal mode
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- GPS support short circuit protection and antenna detection
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LoRa specifications:
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- 168 dB maximum link budget.
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- +20 dBm - 100 mW constant RF output vs.
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- +14 dBm high efficiency PA.
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- Programmable bit rate up to 300 kbps.
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- High sensitivity: down to -148 dBm.
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- Bullet-proof front end: IIP3 = -12.5 dBm.
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- Excellent blocking immunity.
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- Low RX current of 10.3 mA, 200 nA register retention.
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- Fully integrated synthesizer with a resolution of 61 Hz.
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- FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
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- Built-in bit synchronizer for clock recovery.
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- Preamble detection.
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- 127 dB Dynamic Range RSSI.
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- Automatic RF Sense and CAD with ultra-fast AFC.
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- Packet engine up to 256 bytes with CRC.
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- Built-in temperature sensor and low battery indicator.
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GPS Specifications:
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- Power Acquisition:25mA,Power Tracking:20mA.
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- Compliant with GPS, SBAS.
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- Programmable bit rate up to 300 kbps.
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- Serial Interfaces UART: Adjustable 4800~115200 bps,Default: 9600bps.
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- Update rate:1Hz (Default), up to10Hz.
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- Protocols: NMEA 0183, PMTK.
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- Horizontal Position Accuracy:Autonomous <2.5 m CEP.
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- TTFF-130dBm with EASY:Cold Start <15s,Warm Start <5s,Hot start <1s;TTFF at-130dBm.
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- without EASY:Cold Start <35s,Warm Start <30s,Hot Start <1s.
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- Timing Accuracy:1PPS out 10ns?Reacquisition Time <1s.
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- Velocity Accuracy Without aid <0.1m/s,Acceleration Accuracy Without aid 0.1m/s?.
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- Sensitivity Acquisition -148dBm?Tracking -165dBm?Reacquisition -160dBm.
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- Dynamic Performance Altitude Max.18000m?Maximum Velocity Max.515m/s?Maximum Acceleration 4G.
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- L1 Band Receiver(1575.42MHz) Channel 22 (Tracking) /66 (Acquisition).
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Includes:
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- 1x Lora/GPS HAT
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- 4x Brass cylinders
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- 4x Screws
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- 4x Nuts
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- 1x Glue Stick Antenna(868 MHZ, 433 MHZ or 915 MHZ depends on order)
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Warranty_x000D_
- 1 Year Manufacturer Warranty + Additional 1 Year Instrument Choice Warranty_x000D_
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