WNC-M25MRS3
Research Edition Modem
Our research edition modems are designed to bridge the gap between developing applications using a simulator and high-end commercial deployments. Due to its low cost, these modems provide an easier entry to the world of underwater communications to any underwater technology enthusiasts.
Key Features
- Up to 15 kbps data rate*.
- Ranging functionality with 0.1 m precision.
- Doppler resilience of ±4 knots or better.
- Support for coherent and incoherent communication schemes.
- Support for arbitrary signal transmission as well as recording (passband, baseband).
- Support for user defined communication schemes using UnetStack.
* Depending on channel conditions and reliability requirements.
Standalone Configuration
A modem in the standalone configuration (SC) operates on external power source such as a battery (for underwater deployments) or a power supply (for deployments from the water surface).
TECHNICAL SPECIFICATIONS
Communication
| Feature | Details |
|---|---|
| Modulation (software defined) | PSK-OFDM, FH-BFSK |
| FEC (Forward Error Correction) | - LDPC (up to 1/6 rate code) - JANUS (1/2 rate convolution code) |
| JANUS support | Yes, subject to operating frequency band |
| Carrier frequency | 24 kHz |
| Bandwidth | 12 kHz (20 - 32 kHz) |
| Source level | 175 dB re 1 µPa @ 1 m rms (nominal) |
Software
| Feature | Details |
|---|---|
| Framework | UnetStack |
| User Interface | Interactive web UI |
| Software Interfaces | Java, Groovy, Python, C, JavaScript, Julia, Matlab |
Electrical
| Feature | Details |
|---|---|
| Power source | 22 - 28 VDC (24 VDC recommended) |
| Power consumption | < 4 W (receive mode, nominal) < 25 W (transmit mode, avg.) |
| External interface | Ethernet (10/100 Mbps) |
| On-board storage | 32 GB |
Mechanical
| Feature | Details |
|---|---|
| Hull material | Acrylic |
| Operating depth | 100 m |
| Dimensions | ⌀ 130 ✕ 290 mm |
| Operating temperature | 0 to 40 °C |
