Kea V41SBE

$6,700.00$7,000.00 USD

The KEA V41SBE GNSS receiver is a flash based FPGA receiver platform designed for space based operation or ideally suited as a high performance working receiver. It is a small form-factor receiver designed for pin compatibility with other OEM GPS receivers.

The KEA V41SBE receiver features a MicroSemi flash based SmartFusion2 SoC FPGA with on-chip embedded memory and phase locked loop circuitry. The receiver firmware runs on the embedded ARM Cortex™ M3 32 bit processor. The GNSS base-band logic is also contained in the SmartFusion2 FPGA fabric. The receiver architecture is designed to allow expansion and development by extending the unused logic capacity in the processor and FPGA fabric.

The receiver is designed with a range of features to allow robust performance in harsh environments such as space limited missions. The use of flash based devices improves the tolerance of the receiver to radiation induced effects when used in space.

The RF down-converter uses a custom wide band ASIC to convert the GNSS signal to a low 4MHz IF for sampling. It allows access to both GPS L1 and Galileo E1 signals.

The receiver hardware can be customised to any end user requirements on request.

This version is normally used for ground based space craft integration and testing. The firmware in the E version will have the ITAR limits applied.

HDL Base-band

The Base-band logic operates as a memory mapped add-on peripheral to the ARM CortexTM M3 processor. The Base-band can be scaled up or down to accommodate the requirements of the end user.


SKU: V41SBE Categories: ,

GNSS RF down-converter for L1 and E1 signals
16.368 MHz VC-TCXO GNSS disciplined oscillator for frequency syntonization
Microsemi SmartFusion2 SoC FPGA
64Mbit serial flash for FPGA image and firmware
64Mbyte of ECC SRAM
Super-cap backed real-time clock
32K FRAM parameter storage
Temperature sensor
PPS output
IMU with accelerometer and gyro
Power management circuitry
JTAG port for development
20 pin general purpose IO header
Up to 12 programmable digital IO lines
4 LED indicators
Field upgradable GPS firmware and Baseband


Power supply +5V (USB) or +3.3V direct
Power consumption 1.0 W
Antenna voltage 3.3 V
Antenna connector SMA jack


Serial interfaces 1 x USB Port (48Mbits/s), 2 x Optional serial ports (up to 115.2 kbps)
Digital IO 3.3 LVTTL IO’s (Programmable)
PPS Configurable 3.3V time pulse output
SPI 1 Optional interface
I2C 1 Optional interface
Protocols NMEA, 
RTCM3.2 carrier-phase
Antenna type Recommended active antenna with 26dB LNA

Mechanical and Environmental

Operating temperature -30℃ to +80℃
Humidity – 95% RH, non-condensing
Size 80mm x 55mm
Weight 60 grams
Shock MIL-STD-883 18 G

Receiver Performance

Default update rate 1 Hz
Accuracy < 10 m
 Cold start 40s
 Warm start 30s
Hot start <1s
Sensitivity: Cold start Tracking -140dBm -150dBm”
Timing accuracy: (With high quality TCXO option) 99%
 RMS  <15 ns RMS

The standard receiver firmware is supplied as a full featured professional version with robust performance designed for commercial deployment. This can also be available as a licensed runtime code module for product deployment.

To meet specific end user requirements the firmware can be customised to include features such as carrier phase measurement and or special output messages on request.

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Additional information

Weight .2 kg
Dimensions 8 x 5.5 cm

Receiver Only – Firmware Option O, Receiver + Schematic – Firmware Option O