Where should injected sweep pulses be positioned to avoid interference?

To avoid interference with active return carriers, injected sweep pulses should be positioned between the active return carriers, provided there is sufficient bandwidth to accommodate this placement. This approach minimizes the risk of overlap between the frequencies of the sweep pulses and the return carriers, thereby allowing both signals to coexist without causing distortion, noise, or any form of signal degradation.

By positioning the sweep pulses in this manner, one can ensure that they do not interfere with the functioning of the active return carrier signals, which are typically used in communications or data transmission systems. This careful allocation of frequency space is crucial for maintaining the integrity of both signal types, thereby ensuring effective operation of the overall system.

Placing the pulses either before or after the active return carriers could result in interference, especially if these regions are already occupied by necessary frequency allocations, which can lead to signal distortion. Thus, the strategy of situating injected sweep pulses between active return carriers is the most effective for avoiding interference while optimizing the use of available bandwidth.