performance index

  Module model

NM871B

  Receiving satellite frequency point

BDS

B1I、B2I、B3I、B1C、B2a、B2b

GPS

L1CA、L1C、L2C、L5

GLONASS

L1、L2

Galileo

E1、E5a、E5b

QZSS

L1、L2

SBAS（match）

L1

  Update rate

original data

10Hz(Pure guidance system)

5Hz(Start the integrated navigation system)

RTK location

10Hz(Pure guidance system)

5Hz(Start the integrated navigation system)

integrated navigation

-

100Hz

  Single-point positioning accuracy

plane

≤1.5m(1σ)

elevation

≤3.0m(1σ)

  DGNSS accuracy

plane

≤0.3m+10ppm(1σ)

elevation

≤0.6m+10ppm(1σ)

  RTK accuracy

plane

≤1cm+1ppm(1σ)

elevation

≤2cm+1ppm(1σ)

  Comprehensive navigation calculation accuracy（1km or 2min）

-

                2%×operating range

  Timing accuracy

≤20ns(1σ)

  Rate accuracy

≤0.05m/s  (1σ)

  Cold start time

≤35s

  Warm-up time

≤5s

  Recapture time

≤1s

  RTK initialization time

≤5s(10km base line)

  RTK initialization reliability

≥99.9 % (10km base line)

  Support agreement

RTCM2.X  RTCM3.X  NMEA-0183  user-defined protocol

physical property

  Size

17mm×22mm×2.8mm

  Power supply

3.0V~3.6V DC

environmental index

  Humidity

95% No condensation

  Operating temperature

-40℃~+85℃

  Storage temperature

-55℃~+125℃

modi module interface

  Functional interface

3×UART、1×I2C、1×PPS、1×SPI