Table of Contents
Advertisement
D Functional Overview
D
FUNCTIONAL OVERVIEW
D FUNCTIONAL OVERVIEW
D.1 MILLENNIUM-GLONASS GPSCARD SYSTEM
The MiLLennium-GLONASS GPSCard consists of a radio frequency (RF) and a digital electronics section. Prior
to operation, a GPS/GLONASS antenna, power supply, and data and signal interfaces must be connected. The
installation instructions for a MiLLennium-GLONASS GPSCard and a ProPak II or PowerPak II may be found in
Chapter 3 (Page 17), Appendix E (Page 59) and Appendix F (Page 73) respectively. The overall system is
represented in Figure D.1. A brief description of each section follows.
Figure D.1 MiLLennium-GLONASS GPSCard System Functional Diagram
4
18
23
22
Reference
Description
1
MiLLennium-GLONASS GPSCard
2
RF section
3
Digital section
4
Antenna capable of receiving L1 signal
NovAtel GPS/GLONASS antenna or user-supplied
5
Optional user-supplied LNA power
(0 - 30 VDC)
6
User-supplied power (5 VDC)
7
Optional external oscillator (5 or 10 MHz)
8
User-supplied data and signal processing
equipment
9
COM1
10
COM2
D.1.1 GPS/GLONASS ANTENNA
The purpose of the GPS/GLONASS antenna is to convert the electromagnetic waves transmitted by the combined
GPS/GLONASS satellites at the L1 frequency (1575.42 MHz for GPS and 1602 - 1615.5 MHz for GLONASS)
into RF signals. The MiLLennium-GLONASS GPSCard will function best with an active GPS/GLONASS
antenna; there is a hardware provision to select an internal or external DC power supply for an active GPS/
GLONASS antenna. Note that the antenna self-test will return a "fail" condition if a passive antenna is used (for
further information on self-test status codes, please see RVSA/B log, Page 109). NovAtel active antennas are
56
1
2
21
14
15
20
13
19
6
5
3
16
17
19
7
Reference
Description
11
Input timing strobe
12
Output timing strobe
13
VCTCXO
14
RF - IF sections
15
Signal Processor
16
32-bit CPU
17
System I/O
18
LNA
19
Clock signals
20
AGC signals
21
Control signals
22
RF and power connectors
23
Primary antenna feed
GPS/GLONASS Receiver User Manual Rev 1
8
9
10
11
12
Advertisement
Table of Contents
