| Time domain |
Frequency domain |
| The advantage is that, they are relatively fast and requires less memory than inverting the Helmholtz operator. |
The advantage is that the frequency domain allows for techniques which could be used to determine the stability of the system. |
| A time domain graph shows how a signal changes over time. |
The frequency domain graph shows how much of the signal lies within each given frequency band over a range of frequencies. |
| Time domain is the domain for analysis of mathematical functions or signals with respect to time. |
Frequency domain is the domain for analysis of mathematical functions or signals with respect to frequency. |
| The time domain systems tend to use photon counting detectors which are slow but highly sensitive. |
The frequency domain systems are relatively inexpensive, easy to develop and use and can provide very fast temporal sampling. |
