Polaris 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.
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
| Parameter | Specification |
|---|---|
| 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 frames |
| Input voltage | 4.5 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
| Parameter | Specification |
|---|---|
| Thermal soak | -40 to +85℃ |
| Vibration testing | 14.1 Grms |
| TID | 20 krad(Si) board level |
Additional resources
Customization
Custom hardware and software requests can often be accommodated. Please see the R&D section
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