Mcclellan, CA (PRWEB) March 4, 2011
Macro USA announces the release of the Beetle Nano Unmanned Ground Vehicle (N-UGV). The Beetle is the smallest four wheel drive N-UGV to use Coded Orthogonal Frequency Division Multiplexing (COFDM) technology.
The Beetle N-UGV system is designed to retrieve visual and audio information from areas that are difficult or dangerous to access by the operators.
The robot is a throw-able system with four wheels which presents several advantages over the ball type and two wheel designed systems currently on the market. The system has a day/night tilt camera, capable of tilting +/- 90 degrees, audio microphone, IR and white LEDs, global positioning system (GPS), and Tracksorb wheels for increased mobility.
The Beetle unit not only has the capability of providing 360° coverage of the area, but thanks to the motorized design, can also be moved within the area to optimize the observation point and enlarge the area that can be monitored.
The Beetle is part of the Macro USA class of Nano-UGVs and the only Nano-UGV on the market using COFDM video technology.
- Built to withstand multiple 2.5 meter drops onto concrete.
- Tilt day/night camera, +/- 90 degrees.
- Automatic image inversion.
- COFDM video and FHSS telemetry links.
- Transmission distances; LOS: 200 meters and NLOS: 150 meters
- Audio microphone.
- IR and white LED lights
- Water and Dust proof to IP65.
- Streamline antenna panels.
- Easily integrates into MacroUSA iSAN system.
- Wheel Height: 75 mm (2.95 in)
- Width (wheels): 175 mm (6.88 in)
- Length: 206 mm (8.11 in)
- Ground Clearance: 26 mm (1.02 in)
- Weight: 1.0 Kg (2.2 lb.)
Coded Orthogonal Frequency Division Multiplexing (COFDM):
COFDM is a modulation scheme that divides a single digital signal across 1,000 or more signal carriers simultaneously. The signals are sent at right angles to each other (hence, orthogonal) so they do not interfere with each other.
The main reason to use COFDM is its ability to completely overcome multipath effects. When a signal is transmitted, it is met with obstructions such as canyons, buildings, and even people, which scatter the signal causing it to take two or more paths to reach its final destination, the OCU or CDS. The late arrival of the scattered portions of the signal cause ghost images. Multipath effects can occur simply by an individual walking into the room. For this very reason, some consumers in metropolitan areas or areas with rugged terrain opt for cable or satellite television instead of fighting their antennas for better reception. COFDM is resistant to multipath effects because it uses multiple carriers to transmit the same signal. Instead of the signal scattering when met with an obstacle, it flows around the obstacle like a river flows around a rock making it perfect for urban environments.
In Europe, stations transmit the same signal 100 percent of the time across many borders using single frequency networks. A single frequency network is a network of several stations that broadcast the same signal simultaneously using multiple transmitters. This allows television viewers to watch the same broadcast anywhere in Europe without interference. COFDM is ideal for single frequency networks
Chris Vilter, VP
Phone: (916) 333-5950
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