GPS receiver module reports impossible positions

The Navman Jupiter 30 is an ultra-high-sensitivity surface-mount GPS receiver that is claimed to enable reception in locations previously thought impossible.

Available now from specialist distributor TDC, the Navman Jupiter 30 is an ultra-high-sensitivity surface-mount GPS receiver that is claimed to enable reception in locations previously thought impossible.

The Jupiter 30 receiver is designed for rapid position fixes in low signal strength conditions.

It is particularly suited to heavy "urban canyon" and indoor environments such as buildings and multistorey car parks.

For vehicular installations, the antenna can now be covertly located while still maintaining a high level of position accuracy and good time to first fix.

It also overcomes the traditional limitations of vehicles with UV-coated or athermic windscreens.

The Jupiter 30 shares the same footprint and software interface as the SiRFStarII based Jupiter 20.

Benefiting from SiRFStarIII architecture and a uniquely sensitive design, the J30 can lock on to signals much lower than other autonomous high sensitivity GPS solutions.

With 200,000 effective time/frequency search channels (correlators) and the ability to continue tracking satellites as low as 13dBHz, the J30 sets the new standard for autonomous tracking solutions.

The Jupiter 30 benefits from a small form factor, measuring 25.4 x 25.4 x 3.0mm and weighing 4g.

The receiver is highly suited to applications demanding a wide operating voltage and that require greater noise rejection due to local interference, eg LCDs, processors and colocation with other RF technologies.

This versatility, in addition to the unit's rapid position acquisition, low-power operation (25mA "tracking") and full use of SiRF's Adaptive TricklePower (ATP) and Push-To-Fix (PTF) power save modes ensures wider integration capability and use in power sensitive applications such as battery-operated devices.

Additional features of the J30 include a high quality 0.5ppm TCXO, integral LNA supporting the use of "passive" antennas, Flash memory, 20-channel mode GPS support, time-to-first-fix performance of less than 1s (hot start), ephemeris tail and bit sync for quicker time to fix with low signals and SiRFInstantFix support for rapid GPS navigation in poor coverage locations.

Managing Director of TDC, Jerry Sandys comments: "The excellent versatility of the J30 means that our customers can now develop location-based functionality for environments previously thought impossible for GPS designs whilst at the same time minimising design time and noise shielding requirements".

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