R4 Trimble RTK GPS

Specifications

Specifications:

Measurements

• Advanced Trimble Maxwell 6 Custom Survey GNSS chip with 220 channels

• Trimble R-Track technology

• High precision multiple correlator for GNSS pseudorange measurements

• Unfiltered, unsmoothed pseudorange measurements data for low noise, low multipath error, low time domain correlation and high dynamic response

• Very low noise GNSS carrier phase measurements with <1 mm precision in a 1 Hzbandwidth

• Signal-to-Noise ratios reported in dB-Hz

• Proven Trimble low elevation tracking technology

• Satellite signals tracked simultaneously:

–– GPS: L1C/A, L1C, L2C, L2E

–– GLONASS1: L1C/A, L1P, L2C/A, L2P, L3

–– SBAS: L1C/A

–– Galileo1: E1, E5A, E5B

–– BeiDou1 (COMPASS): B1, B2

• SBAS: QZSS, WAAS, EGNOS, GAGAN

• Positioning rates: 1 Hz, 2 Hz, 5 Hz, and 10 Hz

positioning performance2

Code differential GNSS positioning

Horizontal. . . . . . . . . . . . . . . . . . . . . . . . 0.25 m + 1 ppm RMS

Vertical. . . . . . . . . . . . . . . . . . . . . . .   . 0.50 m + 1 ppm RMS

SBAS differential positioning accuracy3. . . . . . . . . . . . . . . . . . .typically <5 m 3DRMS

Static GNSS Surveying

High-precision static

Horizontal. . . . . . . . . . . . . . . . . . . . . . . . 3 mm + 0.1 ppm RMS

Vertical. . . . . . . . . . . . . . . . . . . . . . . . . . 3.5 mm + 0.4 ppm RMS

Static and FastStatic

Horizontal. . . . . . . . . . . . . . . . . . . . . . 3 mm + 0.5 ppm RMS

Vertical. . . . . . . . . . . . . . . . . . . . . . . . . 5 mm + 0.5 ppm RMS

PostProcessed Kinematic (PPK) GNSS surveying

Horizontal. . . . . . . . . . . . . . . . . . . . . . . . 8 mm + 1 ppm RMS

Vertical. . . . . . . . . . . . . . . . . . . . . . . . . 15 mm + 1 ppm RMS

Real Time Kinematic Surveying4

Single Baseline <30 km

Horizontal. . . . . . . . . . . . . . . . . . . . . . . . . . 8 mm + 1 ppm RMS

Vertical. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 mm + 1 ppm RMS

Network RTK

Horizontal. . . . . . . . . . . . . . . . . . . . . . . . 8 mm + 0.5 ppm RMS

Vertical. . . . . . . . . . . . . . . . . . . . . . . 15 mm + 0.5 ppm RMS

Initialization time5. . . . . . . . . . . . . . . . . . . typically <8 seconds

Initialization reliability5 . . . . . . . . . . . . . . . . . . . typically >99 9%

hardware

Physical

Dimensions (W×H). . . . . . . 19 cm × 10.2 cm (7.5 in x 4.0 in),

including connectors

Weight. . . . . . . . . . . . . 1.52 kg (3.35 lb) with internal battery,

internal radio with UHF antenna

3.04 kg (6.70 lb) items above plus range pole,

controller, and bracket

Temperature6

Operating. . . . . . . . . .–40 °C to +65 °C (–40 °F to +149 °F)

Storage. . . . . . . . . . . .–40 °C to +75 °C (–40 °F to +167 °F)

Humidity. . . . . . . . . . . . . . . . . . . . . . . . . . . . 100%, condensing

Water/dustproof. . . . . . . . . . . . . . . IP67 dustproof, protected from temporary

immersion to depth of 1 m (3.28 ft)

Shock and vibration. . . . . . . . . . . . . . . . . . . . . . . . . Tested and meets the following

environmental standards:

Shock. . . . . . . . . . . . . . . .Non-operating: Designed to survive a 2 m (6.6 ft) pole

drop onto concrete. Operating: to 40 G, 10 msec, sawtooth

Vibration. . . . . . . . . . . . . . .MIL-STD-810F, FIG.514.5C-1

Electrical

• Radio modem: fully Integrated, fully sealed internal 450 MHz receiver/transmitter

option:

–– Transmit power: 0.5 W

–– Range9: 3–5 km typical / 10 km optimal

• Cellular: fully integrated, sealed internal GSM/GPRS option

• Bluetooth: fully integrated, sealed 2.4 GHz communications port (Bluetooth?)10

• External communication devices for corrections supported on Serial and Bluetooth ports

• Data storage: 11 MB internal memory, 188.6 hours of raw observables (approx.

1.4 MB/day), based on recording every 15 seconds from an average of 14 satellites

Data formats

• CMR: CMR+, CMRx input and outputs

• RTCM: RTCM 2.1, RTCM 2.3, RTCM 3.0, RTCM 3.1 input and outputs

Supported Trimble Controllers

• Trimble Slate Controller

• Optional1: Trimble TSC3 controller, Trimble CU controller, Trimble Tablet Rugged PC