Electronics – Raymarine

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Raymarine’sG-series System

Raymarine’sG-series System

Raymarine introduced its G-Series multifunction electronic navigation system at the Fort Lauderdale International Boat Show in October. The latest addition to its alphabetic A-, C- and E-Series multifunction display systems, the G-Series is intended for larger yachts that can accommodateits 12-, 15-, 17- and 19-inch ultrabright, sunlight-readable, multiple-input displays.

 

The wireless Command Center keyboard allows control of all on-board stations. 

The G-Series introduces a new central processor module, the GPM400 Data Master, a new CommandCenter keyboard, and an important new family of high-definition (HD) digital signal processing (DSP) radars that mark a significant advance in Raymarine’s radar technology. The

Step aboard for a look at the future of navigation: integrated systems, chart plotters, digital radar and 3-D images. Read the other stories in this package: Electronics - 2008   Electronics – Roundup   Electronics - Sources   Electronics – Furuno   Electronics – Solar flares

GPM400 Data Master is delivered with a complete set of Navionics Platinum charts stored in its internal memory. The system’s central processor and 3D graphics accelerator deliver chart and photo images that are noticeably superior to previous systems. The processor module can store up to 3,000 waypoints comprising up to 45,000 track points, assembled into 15 independent track memories. Multiple display systems can use multiple GPM400 processor modules, permitting almost unlimited expansion.

The G-SeriesCommandCenter keyboard is available in both wired and wireless configurations and includes an alphanumeric keypad, a series of video input control keys, autopilot controls, and a set of five soft keys that correspond with on-screen prompt identifiers. The operating structure likely will be familiar to those who have previous experience with Raymarine’s E-Series systems.

The new Super HD radars use digital signal processing to automate and enhance target acquisition and definition to levels that appear to be superior to previous Raymarine analog radar sets. The use of DSP technology in the processing of the radar signal produces positive results similar to what Raymarine achieved with its pioneering introduction of DSP in its sonar/fishfinder systems a few years ago.

Unlike traditional analog radar signal processing that uses fixed or manually tuned filter circuits to extract radar signals from the inevitable RF noise, the HD radar’s DSP processor is adaptive and automatically identifies and isolates the signals that represent targets of real interest. The control settings for gain, sea clutter, receiver tuning and interference rejection are automatically managed by the radar’s data processor and matched to whatever range scale is in use. DSP’s waveform analysis process is used to improve the effectiveness of the antenna, particularly in horizontal beam angle and in suppressing undesirable sidelobe response.

Although not yet detailed in the information posted on the Raymarine Web site (www.raymarine.com ), the Super HD radars offer simultaneous dual-range operation, with automatic selection and operation at the optimum pulse length and pulse repetition rate for each of the selected ranges. This new capability is superior to previous dual-range radars that were limited to using the pulse length and repetition rate appropriate to the longest range in use. When operating in dual-range mode each screen image is controlled independently, allowing settings such as sea state, gain, noise filtering and the like to be managed automatically or manually by the operator.

Currently available radar systems range from 4- to 12-kW, 48- to 72-inch open array antenna units. Up to 256 colors are used to differentiate target details. The built-in MARPA (mini automatic radar plotting aid) can track up to 25 targets. AIS targets can be displayed when the optional AIS receiver is included in the system. If desired, operational settings for the radar can be simplified with the use of four preset operating modes (harbor, coastal, offshore and buoy). The entire radar electronic system is contained within the antenna base unit. Connection to the central processor is accomplished using a pair of DC power wires and a SeaTalk hs bus cable (apparently an Ethernet cable with a non-standard address structure).

The G-Series system introduces two new high-brightness, high-resolution LCD screens, the 17-inch (diagonal) G170 and 19-inch G190. Both are capable of displaying images at SXGA resolution (1,280 by 1,024 pixels) and can show UXGA images (1,600 by 1,200 pixels) using the built-in scaler. Screen brightness is quoted at more than 1,000 candelas per square meter (cd/m2) for the 17-inch unit, more than 850 cd/m2 for the 19-inch. High brightness also is indicated by the displays’ substantial DC power appetite: 7.5 amps at 12 VDC, or just over 90 watts. Nine front panel selected video inputs allow the displays to be used as output devices for computers, closed-circuit television cameras and entertainment systems, in addition to their primary function. The built-in picture-in-picture capability adds to the displays’ flexibility.

Ancillary G-Series modules include the DSM300 and DSM400 digital sounders, a number of video cameras managed by the GVM400 video module, a Sirius marine weather receiver with optional Sirius audio, AIS target tracking with the AIS250 receiver, and the option to display instrument and engine data.

Raymarine has built on its substantial knowledge base to create this top-of-the-line multifunction navigation display and management system, adding significant innovation in the use of DSP to enhance the performance of the radar sensor system.

Pricing for the G-Series units range from $5,995 for the 12-inch display to $11,995 for the 19-inch; $5,090 for the 4kW 48-inch HD digital open array radar to $9,590 for the 12kW 72-inch Super HD digital open array; $5,400 for the processor module; $2,795 for the digital sounder module; $750 for the video module and $650 for the Command Center keyboard. For complete pricing, visit www.raymarine.com .