ORG4572-R01-TR2 datasheet(22/40 Pages) ETC

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Multi Spider - ORG4572 Datasheet

Revision 3.0

November 23, 2014

16. EXTENDED FEATURES

16.1. ALMANAC BASED POSITIONING (ABP™)

With ABP™ mode enabled, the user can get shorter Cold Start TTFF as tradeoff with position accuracy.

When no sufficient ephemeris data is available to calculate an accurate solution, a coarse solution will

be provided where the position is calculated based on one or more of the GPS satellites, having their

states derived from the almanac data.

Data source for ABP™ may be either stored factory almanac, broadcasted or pushed almanac.

16.2. ACTIVE JAMMER DETECTOR AND REMOVER

Jamming Detector is embedded DSP software block that detects interference signals in GPS L1 and

GLONASS L1 band.

Jamming Remover is additional DPS software block that sort-out Jamming Detector output mitigating

up to 8 interference signals of Continuous Wave (CW) type up to 80dB-Hz each.

FIGURE 7 – ACTIVE JAMMER DETECTOR FREQUENCY PLOT

16.3. CLIENT GENERATED EXTENDED EPHEMERIS (CGEE™)

CGEE™ feature allows shorter TTFFs by providing predicted (synthetic) ephemeris files created within

a non-networked host system from previously received satellite ephemeris data.

The prediction process requires good receipt of broadcast ephemeris data for all satellites.

EE files created this way are good for up to 3 days and then expire.

CGEE™ feature requires avoidance of power supply removal.

CGEE™ data files are stored and managed by host.

16.4. SERVER GENERATED EXTENDED EPHEMERIS (SGEE™)

SGEE™ enables shorter TTFFs by fetching Extended Ephemeris (EE) file downloaded from web server.

Host is initiating periodic network sessions of EE file downloads, storage and provision to module.

There is one-time charge for set-up, access to OriginGPS EE distribution server and end-end testing for

re-distribution purposes, or there is a per-unit charge for each module within direct SGEE™

deployment.

GPS EE files are provided with look-ahead of 1, 3, 7, 14 or 31 days.

GLONASS EE files are provided with look-ahead of 1, 3, 7 or 14 days.

f[GHz]

PCW [dB-Hz]

1.570

1.571

1.572

1.573

1.574

1.575

1.576

1.577

1.578

1.579

1.580

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