If the sampling rate is such that there is some overlap between successive spatial intervals, the resulting pixel will include energy from adjacent pixels.

If the sampling rate is such that there are gaps between successive spatial intervals, a complete image of the scene will not be collected.

A related but inverse concept is staring time, or dwell rate, of the sensor. This is the finite time interval the sensor collects energy at each IFOV. A lower dwell rate means more data generated (sensor "dwells" on each spot less), but quality goes down for two reasons: 1) less radiation collected means a lower accuracy for the generated data, and 2) faster movement of the sensor implies a larger cross-track boundary dimension of each output pixel (i.e., lower image resolution)