| Navigational
System Development Products |
|
| RF
Front Ends |
| RF front ends downconvert GPS signals
to IF and then digitize them at user-specified rates. Digitized
data go either to PC RAM or to hard disk. The software receiver
uses data from the front end. The RF front end includes a
downconverter board and data-logging board. The data-logging
board mounts into the PCI slot of the host platform (PC).
Users can mount the downconverter board as a daughter card
of the data-logging board, or keep it outside the PC, using
separate enclosure with an independent power supply. |
| |
ITEM
1A: Single-Frequency
GPS Front End (PDF)
GPS
FRONT END (GPF-CA-001-01) |
| Downconverter : |
DC-1-002-01 |
| Data-Logger : |
DL-1-002-01 |
| |
|
| GPS FRONT
END WITH AGC (GPF-CA-004-04) |
| Downconverter : |
DC-1-004-01 |
| Data-Logger : |
DL-1-002-01 |
| |
|
| GPS AGC
FRONT END (GPF-CA-007-04) |
| Downconverter : |
DC-1-007-04 |
| Data-Logger : |
DL-1-002-01 |
|
| |
| SINGLE FREQUENCY DOWNCONVERTERS |
| |
DC-1-002-01 |
DC-1-004-01 |
DC-1-007-04 |
| Input Frequency |
1,575.42 MHz |
1,575.42 |
1,575.42 |
| Bandwidth |
4 MHz |
4 MHz |
2 MHz |
| Noise Figure |
4.5 dB |
4.5 dB |
4.0 dB |
| Gain |
70 dB |
90 dB |
80 dB |
| Gain
Range |
0-30 dB (2dB steps) |
AGC |
N/A |
| Final IF |
3.99 MHz |
3.99 MHz |
2.556 MHz |
| Antenna |
Single L1, Integrated 26 dB LNA |
Single L1, Integrated 26 dB LNA |
Same |
| Antenna Power |
12V dc |
12V dc |
12V dc |
| Housing |
6"x4"x1"; SMA connectors |
6"x4"x1"; SMA connectors |
4”x2”x0.9” |
| Power Consumption |
2.6 w |
2.6 w |
275 mw |
| Ext. Clock
|
10 MHz |
10 MHz |
N/A |
|
|
| DATA LOGGER: |
DL-1-002-01 |
| Sample rate: |
4 to 10 MHz, 2 bits (up to 12 bits optional) |
| Interface: |
PCI bus |
| Storage: |
(optional) storage memory m-card |
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