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NV08C-CSM

GPS/GLONASS/BDS/GALILEO/QZSS /SBAS RECEIVER

 

• GPS, GLONASS, GALILEO, COMPASS, QZSS,SBAS L1 signals

• Compact LGA 20x26x2.5 mm design for SMT assembly

• Navigation and Time synchronization applications

• 32 GNSS tracking channels

• Assisted GNSS option supported

• Various Dead Reckoning options

• 200K correlators ensures small TTFF and high signal sensitivity

• 4 MB SPI FLASH for FW upgrade and User’s data storage

• RAIM support

• NMEA 0183 (IEC 1162), BINR, RTCM SC 104 data protocols

• 24 mW @ Low Power Time‐to‐Time Fix (TTTF) Mode

• Extended operating temperature –40 to +85°C

 

The NV08C‐CSM is an integrated satellite navigation receiver. The device’s key feature is its ability to work with global navigation satellite systems (GNSS) that have been deployed so far in the world – GPS and GLONASS, the GALILELO and COMPASS as well as, SBAS systems (EGNOS, WAAS, MSAS and GAGAN) are also fully supported.

The NV08C‐CSM was developed for use in various LBS and M2M applications.

The receiver offers high sensitivity and high performance of GNSS signal

acquisition and tracking combined with low power consumption and small size.

The assisted GNSS option and advanced power saving modes are supported.

Separate GPS and GLONASS RF channels and 3‐stage filtration provide better

noise immunity in urban and industrial environment, railway stations and other

places with high interference level. Multiple satellites available from GNSS

constellations ensure higher availability of navigation signal in urban canyons

compared to any single constellation solution.

For system integrator the NV08C‐CSM provides a variety of interfaces, flexible power supply options, power supply for optional active antenna. A very compact and complete GNSS receiver can be integrated on a low cost 2 or 4‐layer PCB with a minimal number of external passive parts.

   

  • GNSS signals:• Number of channels: 32 • Satellite access mode: All-in-view • GPS/GALILEO/SBAS: L1 1575.42 MHz   C/A• GLONASS: L1 1597.5-1609.5 MHz       СТ

  • Navigation Features:• Accuracy (RMS)*                     RMS, 24hr static, SV @ –135 dBm   - horizontal autonomous mode 1.5 m     - differential mode 1 m     - height 3 m     - velocities 0.05 m/s     - time (1PPS) ±25 ns   38.5ns granularity

 

• Time to First Fix*:
   - reacquisition <1 s
   - hot start <3 s
   - cold & warm start 30 s
• Sensitivity:
   - tracking and reacquisition –160 dBm
   - cold start –143 dBm
• Supported:
   - vehicle dynamics velocity 500 m/s
   - acceleration 5g
   - altitude 18000 m
• Coordinate system: WGS-84, PZ-90 SK-42, SK-95  
* typical values

 

  • RF functionality:• LNA Built-In (SW controlled for power saving) • RF structure Two RF FE chains: GPS/GALILEO/COMPASS/SBAS L1 GLONASS L1 • Antenna type Active1 • Internal Clock 26 MHz TCXO Recommended active antenna: GPS\GLONASS L1, 35MHz Bandwidth, 20dB Gain, NF 2dB, Attenuation 35dB @ fc±70MHz 

  • Environmental data:• Operating temperature –40 to +85°C • Maximum operating humidity 98% @ 40°С

  • Data Interface:• Data update/output rate 1, 2, 5, 10 Hz • Data output rate in TTTF mode (1-60 s)-1 • Supported protocols   - IEC1162-1 (NMEA 0183)   - BINR (proprietary)   - RTCM SC 104 v2.3• Host data interface:   - 2x RS-232E I/O ports (1.8...3.3V CMOS-level)   - 2x SPI TWI (I2C compatible)   - 1PPS output (CMOS level)• Data exchange rate up to 230’400 bit/s

  • Power supply

 

• Power supply voltage 3.0…5.5V 
• Digital I/O voltage level 1.8…3.3V 
• Backup supply 1.2V, 4 µA 
• Power consumption 
   - GPS only time-to-time fix mode @ 1s* 18 mW  
   - GNSS time-to-time fix mode @ 1s* 24 mW  
   - GPS only tracking&navigation mode* < 120 mW  
   - GNSS tracking&navigation mode*   < 180 mW  
* average values

 

 

NV08C-CSM-BRD High Precision GNSS Card

 

NV08C-CSM-BRD: The NV08C-CSM-BRD Card’s key feature is its compatibility with existing GNSS systems such as GPS and GLONASS and Satellite Based Augmentation Systems (SBAS), as well as with newly deployed GNSS systems such as GALILEO and BeiDou.

The NV08C-CSM-BRD Card features a highly sensitive receiver to capture and maintain the satellite signals, combined with low power consumption, even when receiving multiple GNSS and SBAS signals. Tracking satellites from multiple GNSS constellations and using Assisted GNSS (A-GNSS) ensures much higher availability of navigation signals, when compared to single constellation alternatives, and provides increased performance, accuracy and reliability for devices used in urban and industrial environments. The NV08C-CSM receiver includes two separate RF paths (GPS and GLONASS) and a 3-stage SAW filtration for enhanced interference immunity.

The NV08C-CSM-BRD Card provides flexible integration options, including active or passive antenna connection with automatic detection, antenna power supply and short circuit protection.

 

 

Feature:

The NV08C-CSM-BRD Card Features:

• Very quick and simple integration

• GPS, GLONASS, GALILEO, QZSS, COMPASS & SBAS L1

• Precise navigation, positioning and timing

• 32 GNSS tracking channels

• 200K correlators - Ensuring fast TTFF and high signal sensitivity

• Raw Data output - Pseudorange, Carrier phase and Doppler

• Individual GLONASS group delay calibration assuring very high accuracy

• Assisted GNSS (A-GNSS) interface

• 64 KB EEPROM for firmware upgrade and data storage

• NMEA 0183 / IEC 61162-1, binary (BINR) and RTCM SC-104 data protocols

• Receiver Autonomous Integrity Monitoring (RAIM)

• Industrial operating temperature range ‐40 to +85°C

 

 

NV08C-CSM-BRD Card System Diagram

 

Data Protocol

The NV08C-Mini PCI-E’s supported protocols are as follows:

• NMEA 0183 v2.3 (IEC61162-1)

• BINR (proprietary binary protocol)

• RTCM SC 104 (messages: #1, #9, #31, #34)

 

Default Device Configuration

By default, the NV08C-CSM-BRDis pre-configured to working with NMEA, 115200 bps:

messages/rates: GGA/1, RMC/1, GSV/1, GSA/1, RZD/1, GBS/10 (refer to NV08C Receivers Protocol Specification for further details)

Other NV08C-CSM-BRDdefault settings:

• Navigation mode: GPS and GLONASS

• RTCM data: accounted automatically

• SBAS data: on demand ($PONAV NMEA command)

• RAIM: automatic

• Assisted data: accounted automatically

• Navigation data update rate: 1 Hz

• NMEA messages: see the Protocol Specification document

 

Electrical Characteristics

 

GNSS Antenna Connection

It is very important to select a proper antenna to achieve optimum performance.

If an active antenna is employed, excessive LNA gain and bandwidth may reduce the quality of signal reception, due to potential in-band and out-of-band interferences. As well, an active antenna with insufficient gain or bandwidth, or high cable loss may decrease the receiver’s sensitivity.

Recommended active antenna parameters are as follows:

• GPS/GLONASS L1, bandwidth 35 MHz @ fc = 1590 MHz

• Gain including LNA and cable losses 20 to 30 dB

• Built-in LNA noise figure <2 dB

• RF Output Impedance 50 Ω

• Return Loss <-10 dB

• Out-of-band signal Rejection: at least 35dB @ fc ± 70 MHz.

 

If a passive antenna is used it is essential to select an antenna with good RF output impedance matching to prevent the NV08C-NV08C-BRD’s LNA from self-oscillating, and also to keep cable loss as low as possible, as it directly impacts the RF path’s noise figure and decreases the receiver’s sensitivity.

Recommended passive antenna parameters are as follows:

• GPS/GLONASS L1, bandwidth 35 MHz @ fc = 1590 MHz

• Average Gain: > -1 dBic

• RHCP polarization

• Axial ratio: < 3 dB

• Output impedance 50 Ohm

• Return loss < -10 dBm

• Cable Losses as low as possible.

 

Navigation Parameters

 

 

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