General description
The W61 is available in two versions:
- W61PC: A half length PCI card that can be installed in a standard PC under Windows XP / VISTA and Server 2003 (Windows7 and Server 2008 planned).
- W61LAN-MK2: A W61PC integrated into a complete single board computer system operating under Windows XP.
The W61PC decoder offers all functions required to analyze, decode, and process radio data communications in the HF, VHF, UHF and SHF ranges.
The W61PC software is designed to work with your existing equipment as it provides analogue and digital inputs. It allows seamless integration with SDR (Software Defined Radio) receivers with IQ data or digital audio outputs, TCP/IP streams and sound cards.
The W61PC provides
- An signal overview using real-time spectrum and waterfall display
- Demodulation, decoding to content level of known signals. Decoded output can be saved to files or picked up from the remote control interface
- Manual signal measurement
- Automatic classification and CodeCheck of unknown signals
- A versatile XML Remote Control Interface with the same command set used by the W51PC and the W61PC.
Features
- Impressive list of currently implemented modes (see specifications), including:
- INMARSAT B/M/mM/Aero
- Modem and FAX modes
- Robust-Packet
- CLOVER-2
- CLOVER-2000
- PACTOR-3
- CODAN-9001
- High performance wideband analog front end with three wideband AF/IF Inputs covering 50 Hz -25 MHz. Fully reconfigurable regarding FPGA, SP, bandwidth, IF frequency.
- Fully tunable 70 MHz IF (52.5 MHz - 87.5 MHz with SAW filter) input for satellite monitoring with no external receivers
- TCP/IP data input (LAN) for IQ or PCM coded data. Data conversion to the WAVECOM format is done by a separate, external application. Source code available on request.
- Decoding from PC soundcard with sampling rates up to 192 kHz
- Internal sampling rate converter
- Direct decoding from audio files
- Virtual Audio Cable (VAC) support
- High-speed DSP (TMS320C6414, 5760 MIPS) with 14 bit/92.16 MSps analog to digital converter (ADC), external 128 Mb SDRAM and 1 Mb FLASH RAM.
- Half-size PCI card with SMA input connectors.
- Automatic level control to achieve a maximum dynamic range and overrun protection.
- 60 dB input dynamic range
- Digital Down Conversion (DDC) with 96 dB dynamic range (16 bits) and configurable bandwidth from 5 kHz to 500 kHz
- XML Remote Control Interface with the same command set as the W51PC and W-CODE
- Powerful 48 and 96 kHz wide band FFT
- Optional classifier with 4 and 8 kHz bandwidth and automatic code check.
- Optional BitViewer Tool.
- Optional INMARSAT B/M/mM Monitoring mode for data, fax and voice (single or multi-channel if more then one card is used).
- Adaptive Equalizer for high-speed PSK protocols
- Tested with a number of Software Defined Radios e.g. WiNRADiO, Perseus, SDR14/SDRIQ, AOR AR-ALPHA, R&S receivers (using AllAudio and VAC), IZT
- Optional software classifier plug-in with 4 and 8 kHz bandwidth and FSK, MFSK, PKS, and OFDM support
- Pass band filters to mitigate poor propagation conditions or process wideband receiver input
- Worldwide support
Functions
General
The easy-to-use graphical user interface (GUI) with well structured pulldown menus allows an operator to become familiar with the W61PC in a short time. A high degree of operator proficiency can quickly be achieved.
The decoder can be used in a number of configurations:
- Local use as a PC application
- Remote use via a LAN with standard W61PC application instances in a client-server mode
- Remote control from other applications using third party software (using TCP/IP and XML)
- Remote use with a "Remote Desktop connection"
These features allow the system to be adapted to the client's requirements and applications.
The implementation of complex systems for monitoring on a large scale is only limited by the number of decoders and the performance of the hardware and software.
The configuration of the system components can be completely adapted to the requirements of the customer.
A wide range of system default settings can be configured, e.g., input signal level, measuring interval, centre frequency and demodulator type.
A W61PC decoder may be controlled from everywhere in the network and its output may be sent to one or more applications on the network.
In order to process the data output, control the decoder and the code parameters, an integrated remote control interface allows easy control of the W61PC from a customer application.
Analysis
The determination of signal characteristics is assisted by a large number of analysis and measurement functions operating over a wide range of signal parameters.
All of the integrated analysis tools contain many different methods and viewing options. The GUI assists the operator in analyzing the important signal parameters. Exact measurements are easily made using adjustable cursors with associated numerical displays. Dynamic zoom functions allow magnification of details in any selected window. The scroll buffering feature makes it possible to move back and forward in signal history.
Demodulation and Decoding
If a decoder for a protocol is selected, then the demodulator can be tuned by the following ways:
- Automatically (for FSK)
- Manually
- Using the results from the classifier
Services
For telecommunications authorities WAVECOM is able to provide:
- Additional customer specific modes
- Software source code and a complete development environment
- Training
Applications
Typical fields of applications for the WAVECOM decoders include:
- Manual or automated monitoring of radio data communications in the HF/VHF/UHF/SHF (satellite) bands
- Signal intelligence
- Signal analysis and classification
For telecommunications authorities the applications range from stationary monitoring of one transmission with a single system to fully automated broadband monitoring employing many systems.
Decoded data can be imported from third-party applications running on the same or another computer in the network.
Software generated time stamps may be automatically added to each line of decoded data to ensure precise backtracking of any signal.
