LoRa Receiver

The Satlab Polaris LoRa is a fully self-contained software-defined radio receiver for 868 MHz ISM band LoRa messages, with integrated demodulator and storage.

This versatile SDR offers excellent performance given the typical size, weight and power constraints of a CubeSat - or as an additional payload on larger LEO satellites.

The Polaris LoRa receiver is built on Satlab’s second generation SDR platform, based on the in-orbit experience gained from the QubeAIS receiver, which has flown on several missions since 2013.

The Polaris LoRa is part of our Polaris SDR product line that has demonstrated reliable flight heritage since 2019, with over 100 units successfully delivered to customers around the world for a multitude of space missions. With a TRL of 9, it is fully qualified and operational in its intended environment.

Features

• Covers the 868 MHz European ISM band

• Possible to download raw IF spectrum samples

• 128 MB primary data storage and 1 GB secondary storage

• 1.5 W average power consumption

• Low-IF receiver with 16-bit I/Q ADC

• LNA and SAW filters onboard

• Delivered with SW library for easy integration

• CubeSat Space Protocol (CSP) compatible

• CAN, Ethernet and RS-422 connectivity

• Input voltage 4.5 to 40 V

• CSK-compatible form factor

• SMP antenna connector

• ESD protection on all interfaces

Key Parameters

• Frequency coverage: 865.000 to 870.000 MHz

• Bandwidth: 125.000 kHz

• Spreading factors (SF): 8 and 9

• Coding rate (CR): 1, 2, 3 and 4

• Payload length: 2 to 250 bytes

• Sensitivity: -130 dBm (99% reception rate, SF9 with CR4)

• Frame store capacity: 130000 framesInput voltage4.5 to 40 V

• Typical power consumption: 1500 mW (5 V input, 25℃)

• Operating temperature: -40℃ to +85℃

• CAN-bus: Up to 1 Mbit/s

• RS-422: Full duplex, up to 3 Mbit/s

• Ethernet: Full duplex, 100 Mbit/s

• Primary storage: 128 MB NOR-flash

• Secondary storage: 1 GB SLC SD card

• Dimensions: 93.0 x 87.2 x 12.5 mm

• Mass: 185 g

Qualification status

• Thermal soak: -40 to +85℃

• Vibration testing: 14.1 Grms

• TID20: krad(Si) board level