2

GPS Orion PRODUCT BRIEF

Fig.2 GPS Orion Architecture

OUTLINE SPECIFICATION

RECEIVER CHARACTERISTICS

GENERAL:

DATUM:

POSITION ACCURACY:

(standard)

POSITION ACCURACY:

(DGPS)

TIME-TO-FIRST-FIX (TTFF - Ref Notes)

G Cold start:

G Warm start:

G Hot start:

RE-ACQUISITION AFTER SIGNAL LOSS:

ANTI-JAMMING RESISTANCE:

L1 frequency (1575.42MHz), C/A code direct-sequence spread-spectrum,

12 parallel channel continuous-tracking receiver, using 2-bit digital

quantization.

WGS-84 only

25 metres Spherical Error Probability (SEP);

100 metres (2D Root Mean Square) with S/A active.

3 metres SEP, with S/A active.

Typical

90%

105 seconds

<165 seconds

<60 seconds

11 seconds

<15 seconds

< 2 seconds (90%)

-20dBm CW to within

±7.5MHz of L1 (for <3dB degradation in GPS SNR).

Part No

Description

Data Sheet

Reference

DW9255

35.42 MHz SAW Filter

DS3861

GP2010

GPS RF Front End

DS4056

GP2015

GPS RF Front End in TQFP package

DS4374

GP2021

12 Channel Correlator

DS4077

ARM60

32 Bit RISC Processor

DS4004

GPS Architect

12 Channel GPS Development System

DS4605

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