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hw:fortuna_u2_usb [d-m-Y H:i]
hw:fortuna_u2_usb [d-m-Y H:i] (current)
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 +====== Fortune U2 USB ======
  
 +===== Description =====
 +{{hw:​fortuna_u2.jpg ​ }}
 +
 +
 +===== Technical =====
 +
 +* Integrated GPS processor, CPU, and DRAM; WAAS (Wide Area Augmentation System) demodulator;​ Advanced power management for power saving and stand-by modes; Improved multi-path rejection; 1920 time/​frequency search channels for signal acquisition;​ All-in-view 12-channel parallel processing; Cold start under 60 seconds; Maximizes GPS position availability;​ SingleSat updates in reduced visibility; Superior urban canyon performance;​ FoliageLock for weak signal tracking; Reduce need for external sensors
 +
 +* Electrical Characteristics - Frequency: L1, 1575.42MHz; C/A Code: 1.023MHz chip rate; Channels: 12; Sensitivity:​ -170dBW
 +
 +* Accuracy - Position Horizontal: 25m 95% (SA off); Position Vertical: 40m 95% (SA off); Velocity: 0.2m/sec 95% (SA off); Time: 340 nsec. 95% C/A code
 +
 +* Acquisition Rate - Reacqusition:​ 0.1 sec., average (recovery time for being interrupted);​ Hot start: 8 sec., average (with ephemeris and almanac valid); Warm start: 38 sec., average (with almanac but not ephemeris); Cold start: 45 sec., average (neither almanac nor ephemeris); SnapStart: < 3 sec, for up to less than 25 minutes off period
 +
 +* Dynamic Condition - Altitude: < 60,000 feet; Velocity: < 1000 knots; Acceleration:​ 4g., max; Jerk: 20 meters/ sec***3, max
 +
 +* Communication:​ Full duplex asynchronous;​ Bit Pattern: 8 bits, 1 stop bit, no parity; Code type: ASCII for NMEA/ Binary for SiRF; GPS Protocol: SiRF binary/NMEA 0183 changeable; GPS Function: SiRF binary >> position, velocity, altitude, status and control, NMEA 0183 (v2.2) >> GGA, GSA, GSV, RMC, VTG, and GLL; GPS transfer rate: NMEA ASCII 4800bps, SiRF Binary Software command setting: default 19200 bps; DGPS protocol: RTCM SC-104, ver 2.00, type 1, 2, and 9
 +
 +* Time Mark (1 PPS Pulse) - Level TTL; Pulse duration 100ms; Time reference At the pulse positive edge; Measurement Aligned to GPS sec., +/- 1us
 +
 +* Environmental Characteristics - Temperature:​ Operating -40 deg. C to +85 deg. C; Humidity: Operating 5% to 95% R.H.
 +
 +* Diameter: 59mm; Height: 20mm; Weight: 7gm
 
 
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