beautypg.com

0 ordering information, 0 glossary and acronyms, Table 10‑1: jupiter 20 ordering information – Navman LA000508 User Manual

Page 17: 0 ordering information 11.0 glossary and acronyms

background image

1

LA000507G © 2006 Navman New Zealand. All rights reserved. Proprietary information and specifications subject to change without notice.

10.0 Ordering information

The part numbers of the Jupiter 20 variants are shown in Table 10‑1.

Part Number

Description

TU20‑D411‑001

Jupiter 20 (standard)

TU20‑D411‑101

Jupiter 20S (with XTrac)

TU20‑D421‑201

Jupiter 20D (with Dead Reckoning)

TU20‑D101‑001

Jupiter 20 std adapter

TU10‑D007‑400

Jupiter 20 std development kit

TU10‑D007‑401

Jupiter 20S development kit

TU10‑D007‑402

Jupiter 20D development kit

Table 10-1: Jupiter 20 ordering information

11.0 Glossary and acronyms

2dRMS:

twice distance Root Mean Square

ADC:

Analogue to Digital Converter

Almanac:

A set of orbital parameters that allows calculation of approximate GPS satellite

positions and velocities. The almanac is used by a GPS receiver to determine satellite visibility

and as an aid during acquisition of GPS satellite signals. The almanac is a subset of satellite

ephemeris data and is updated weekly by GPS Control.

C/A code:

Coarse Acquisition code

A spread spectrum direct sequence code that is used primarily by commercial GPS receivers to

determine the range to the transmitting GPS satellite.

DGPS:

Differential GPS

A technique to improve GPS accuracy that uses pseudo‑range errors recorded at a known

location to improve the measurements made by other GPS receivers within the same general

geographic area.

GDOP:

Geometric Dilution of Precision

A factor used to describe the effect of the satellite geometry on the position and time accuracy

of the GPS receiver solution. The lower the value of the GDOP parameter, the less the error in

the position solution. Related indicators include PDOP, HDOP, TDOP and VDOP.

EGNOS:

European Geostationary Navigation Overlay Service

The system of geostationary satellites and ground stations developed in Europe to improve the

position and time calculation performed by the GPS receiver.

Ephemeris

A set of satellite orbital parameters that is used by a GPS receiver to calculate precise GPS

satellite positions and velocities. The ephemeris is used to determine the navigation solution and

is updated frequently to maintain the accuracy of GPS receivers.

GPS:

Global Positioning System

A space‑based radio positioning system that provides accurate position, velocity, and time data.

OEM:

Original Equipment Manufacturer

Re-acquisition

The time taken for a position to be obtained after all satellites have been made invisible to the

receiver.

SBAS:

Satellite Based Augmentation System

Any system using a network of geostationary satellites and ground stations to improve the

performance of a Global Navigation Satellite System (GNSS), e.g. EGNOS and WAAS.

SRAM:

Static Random Access Memory

WAAS:

Wide Area Augmentation System

System of satellites and ground stations developed by the FAA (Federal Aviation Administration)

providing GPS signal corrections. (Currently available for North America only.)