RTKWARE UBR1 Technical Datasheet. ver1.1 (29/04/2015)

Transcription

1 RTKWARE UBR1 Technical Datasheet ver1.1 (29/04/2015)

2 Table of Contents Table of Contents... 2 Overview... 3 Key-Features... 3 Applications... 3 Functional diagrams... 4 Power Distribution... 4 Data... 4 Interfaces... 5 Operation modes... 7 Base mode (or RX mode)... 7 Rover mode (or TX mode)... 7 General parameters... 8 GNSS Receiver... 8 GNSS Active Patch Antenna... 9 Network Modem 868/915MHz... 9 References:... 9 Mechanical drawings Revision History

3 Overview The UBR1 is an affordable GNSS receiver board conceived for Real Time Kinematics experimentation, where a centimetre level accuracy in position is needed. It is able to act as BASE and ROVER. Its receiver and built-in modem will bring you the RAW data needed to feed your Real Time Kinematic algorithm / software. In ROVER operation mode, the received satellites signals are sent to the base by means of the medium power integrated UHF transceiver. In BASE operation mode, the GNSS signals are sent through the USB to the computer (or by the expansion TTL port to your microcontroller) and concurrently the UBR1 act as UHF receiver, bridging the incoming data from the rover to the second USB/TTL channel. All the critical elements as antennas, are integrated in the same board, designed with care and extremely tested to avoid interferences between UHF and GPS/GLONASS stages. You will use the UBR1 as soon as you receive it. No external modules are required. A rechargeable LI-PO battery is included Key-Features Multi-constellation receiver GPS / GLONASS / GALILLEO / SBAS /QZSS -165dB sensibility 10Hz Update rate Easy integration 2 x TTL serial outputs 3.3V Regulated output U.FL and SMA Connectors for antenna extensions Time pulse output Applications Self-guided vehicles/machinery Drones Surveying systems Real time location systems. Sport tracking Cartograp Research RAW Data Compatible and tested with RTKlib Fully integrated 868/915MHz built-in UHF transceiver (500mW-3km LOS) 28dB High-gain GPS+GLONASS active antenna TWO Channel USB controller Lithium-polymer USB rechargeable battery Back-up rechargeable battery 3

4 Functional diagrams Power Distribution Data 4

5 Interfaces 3.3V Power Indicator 1 15 USB GNSS TX/RX Indicator Rover/Base Selector 2 Charge Indicator 3 Mini B USB Connector 4 14 GPS/GLONASS Antenna Good Input Power Indicator ON/OFF Switch Modem Config Mode Button Li-Po Battery Plug Modem SMA Antenna Connection 7 11 Power Extender Modem Activity indicator 8 9 Expansion Port 10 Expansion Port Enabler 16 GNSS Antenna U.FL Connector # item Description 1 3.3V Power Indicator Led to indicate a good core voltage after 3.3V regulator. Normal status = ON. 2 Rover/Base Selector Switch to set the mode of operation 3 Charge Indicator 4 Mini B USB Connector 5 Good Input Power Indicator 6 ON/OFF Switch TX Posision ROVER RX Position BASE Led to indicate that the Li-Po battery is being charged. ONCharge in progress OFFCharge finished Two-channel communication interface with GNSS Receiver and Modem. It is also used to supply the current to the module and charge the LiPo battery. Led to indicate a good supply voltage at USB input. Normal status = ON. Activates/Deactivates the board. In OFF position, the charging circuitry remains active to charge the LiPo battery. 5

6 7 Modem SMA Antenna Connection 8 Modem Activity A 9 Expansion Port Here you will plug the 868/915 MHz Antenna included with the UBR1. Bi-colour led modem data indicator: Green Outgoing data from board to air. Red Incoming data from air to board. TTL serial port. When active (via 10 ), the data is not routed into the USB but via the Expansion port. The distribution of pins is as follows: Reg GNSS GNSS Modem Modem GND Output TX RX TX RX 10 Expansion Port Enabler 11- Li-Po Battery Plug & 12 Power extender 13 Modem Config Mode Button 14 GPS/GLONASS Antenna 14 USB GNSS TX/RX Indicator 16 GNSS Antenna U.FL Connector The connector is a JST-PH type. Activates the Expansion Port. It works inverted, thus in ON position the expansion port is deactivated. JST-PH connectors for the 3.7 lithium-polymer battery, The board have an extra connector to power other devices with non-regulated and non-current-limited 3.7V. Push button used for set the modem in configuration mode. This is useful when it is needed to change the modem parameters like frequency, baudrate, etc GNSS Active patch antenna. GNSS Data Activity indicator through the USB. Bi-color led: Green Outgoing data from GNSS receiver to the USB Red Incoming data from the USB to the GNSS receiver, generally used when sending configuration commands. Connector for the GNSS Antenna. The antenna included in the board can be unplugged and the connector used to connect your favourite antenna. 6

7 Operation modes To switch the mode use the selector: Base mode (or RX mode) Rover mode (or TX mode) 7

8 Technical Data General parameters Vsupply Power Consumption update rate) Battery Full Charge Time USB Regulated V Output (Expansion Port) Serial TTL (Expansion Port) Temperature of oper. Weight V Mean: 200mA Peak: 400mA (TX) 3.7V Li-Po 1000mAh JST-PH Connector 2.5h (Vsupply>4.35V) Specification USB 2.0 Mini B Connector First Virtual COM port: 57600bps/8/ODD/1 (Receiver) Second Virtual COM port 57600bps/8/N/1 (Modem) 3.3V (100mA max) 3.3V bps/8/N/1 Board: 43gr (64g with battery) Enclosure: 66gr Silicone Cover: 44gr GNSS Receiver Supported GNSS signals Number of channels RAW Data Update rate Time to first fix Sensitivity Assisted GNSS 1PPS time accuracy cy Limitations L1 GPS/SBAS C/A L1 GLONASS CT L1 GALILEO OS Data+Pilot 32 channels each capable to receive any supported signal Supported Up to 10Hz (DEFAULT 5Hz) Cold star: 25 s (average) Warm start: 25 s (average) Hot start: 3 s (average) Cold star: 143 dbm With A-GNSS: 160 dbm Tracking mode: 160 dbm Supported 15 ns accuracy (rms) 38.5ns granularity (1/26 MHz) Velocity: less than 500 m/s Acceleration: less than 5 g Height: less than 50,000 m Data protocols NMEA 0183 (IEC 1162) RAIM support Coordinate system BINR (DEFAULT) RTCM SC 104 YES WGS-84 PZ-90 SK-42 SK-95 8

9 GNSS Active Patch Antenna Frequency Gain at ~1610MHz MHz: 26.5 ± 3dBic 1602MHz: 28 ± 3dBic Impedance 50Ω Polarization RHCP VSWR Max 2.0 U.FL Plug Network Modem 868/915MHz Frequency Bandwidth Output Power Sensitivity Antenna Impedance / Connector Modulation Bidirectional MHz (EUROPE) MHz (OTHER) 1Mhz +27dBm (3km line of sight) -121dBm 50Ω / SMA RP Female GPSK YES References: Receiver NV08C-CSM CSM Datasheet Receiver NV08C-CSM CSM Protocol Specification Receiver NV08C-CSM CSM Software tools GPS/GLONASS Active patch antenna AGGP.25F Datasheet UHF Modem SNR650 Configuration ion Utility UHF Modem Serial communication protocol 9

10 Mechanical drawings Dimensions Board: 88. Board: 88.3x59 x59x6 x6mm (3.5x2.3x0.24 x0.24 inch) With enclosure: 115x69x19.5mm (4.5x2.7x0.8 inch) Enclosure + Silicone Cover: 120x74x24mm (4.7x2.9x0.9 inch) Revision History Version Date Changes ver March 2015 Initial version ver April 2015 Added weigh Corrected Virtual COM rates 10