What method is best for detecting small RADAR targets?

To detect small radar targets effectively, using a long pulse width with high output power is the most advantageous method. This approach provides several benefits that enhance the radar's ability to discern small or low-reflectivity targets.

Long pulse widths allow for better energy integration over time, which increases the signal-to-noise ratio (SNR). This is crucial when trying to detect small targets, as they usually produce weaker echoes compared to larger or more reflective objects. By transmitting a pulse for a longer duration, the radar system can gather more energy from the returned signals, improving its chances of detecting weak returns that might be obscured by noise.

Another aspect of using high output power is that it increases the overall radiated energy, which extends the effective range and sensitivity of the radar system. Higher power means that even small targets might generate returns strong enough to be detected amid background noise.

Other methods mentioned, such as short pulses or specific frequency bands (like J-band), have their applications but generally do not enhance the ability to detect small targets as effectively as combining long pulse widths with high output power. Short pulses may provide better range resolution but do not accumulate enough energy for weaker returns, and frequency selection might influence some detection capabilities, but it is not the primary factor