Barker codes are binary numbers using two to 13 bits and have unique auto-correlation functions. The points adjacent to the peak of the correlation function equal zero. This is very useful in a radar system since any spurious response can be misinterpreted as a target. A Barker-coded pulse typically uses binary phase modulation.
The 'chip' rate is the dwell time for each bit within the pulse. A 7-bit Barker code contains the bits [+1 +1 +1 -1 -1 +1 -1]. The following table shows Barker Codes supported by Signal Studio for Pulse Building.
|
Barker Code 2 |
10 |
|
Barker Code 3 |
110 |
|
Barker Code 4 |
1011 |
|
Barker Code 5 |
11101 |
|
Barker Code 7 |
1110010 |
|
Barker Code 11 |
11100010010 |
|
Barker Code 13 |
1111100110101 |