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        Windows handhelds target high-accuracy mapping

        Jonathan Angel | Date: Feb 24, 2011 | Comments: 1


        Trimble announced two Windows Mobile handheld computers designed for high-accuracy data collection using global navigation satellite systems (GNSS). The GeoExplorer 6000 devices achieve up to four-inch accuracy in real time, support both GPS and GLONASS, include five megapixel cameras, and have sunlight-readable 4.2-inch screens, according to the company.

        Trimble says its new GeoExplorer 6000 handhelds (right) are designed to work with mapping and GIS (geographic information system) software, and are designed to provide very high accuracy. Offered in a GeoXT model and a GeoXH model, the devices employ TI's OMAP3503 processor, have 256MB of RAM, and include 2GB of flash storage, according to the company.

        The GeoXT model has a single-frequency GPS receiver using Trimble's own Maxwell 6 chipset, which provides it with a 45-second time to first fix, the ability to use 220 channels, and operation with SBAS (satellite based augmentation systems). This device provides 30-inch accuracy in real time and 20-inch accuracy after software postprocessing, according to Trimble.

        The similar GeoXH model uses the same chipset but gains the ability to work with both GPS (U.S.) and GLONASS (Russian) satellite networks. According to Trimble, this version also offers "Floodlight" technology that can boost accuracy in areas where satellite signals are obscured by buildings or trees.

        Trimble says the GeoXH provides real-time accuracy down to four inches. Meanwhile, the company adds, the GeoXT may be upgraded to include Floodlight, in which case it also becomes capable of working with GLONASS satellites.

        Both GeoXH and GeoXT have 4.2-inch, sunlight-readable touchscreens with VGA resolution, according to Trimble. The devices survive four-foot drops, meet the IP65 standard for sealing against liquids or dust, and have a field-swappable battery providing from five to 11.5 hours of operation, the company adds.

        The GeoXH and GeoXT also include a five megapixel autofocus camera that can take VGA-resolution video, says Trimble. Both feature Wi-Fi, Bluetooth, and an optional 3.5G cellular modem that apparently provides voice communications as well as data.

        As well as offering an internal microphone and speaker, the handhelds also include mini-USB ports, SIM sockets, and SDHC slots. A DB9 serial port can be provided via an optional USB-to-serial converter, adds Trimble.

        Features and specifications released by Trimble for the GeoExplorer 6000 GeoXH and GeoXT include:

        • Processor -- TI OMAP3505 (clock speed unstated)
        • Memory -- 256MB of RAM and 2GB of flash storage
        • Display -- 4.2-inch touchscreen with VGA resolution
        • Camera -- five megapixel with autofocus and VGA-resolution video recording
        • Expansion:
          • SIM slot
          • SD slot
        • Wireless:
          • GNSS receiver (GPS/GLONASS on GeoXH, GPS-only on basic GeoXT)
          • WLAN -- 802.11b/g
          • PAN -- Bluetooth 2.1
        • Other I/O:
          • mini-USB
          • audio -- microphone and speaker
        • Battery -- provides from 5 hours (cellular modem active) to 11.5 hours of operation; 4-hour recharge time
        • Operating range -- -4 to 122 deg. F
        • Dimensions -- 9.2 x 3.9 x 2.2 inches
        • Weight -- 2 pounds
        Further information

        According to Trimble, the GeoExplorer 6000 devices are available now, though pricing was not provided. More information may be found on the GeoXH product page and the GeoXT product page.

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