What characteristic does the spectrum of a radar transmitter describe?

The spectrum of a radar transmitter specifically describes the frequency distribution of the transmitted signals. This characteristic is crucial for understanding how radar waves propagate and interact with various targets.

In radar systems, the frequency distribution indicates the range of frequencies that the transmitter can emit, which directly affects the radar's detection range and resolution. Different frequencies can reveal varying information about the target, such as size, distance, and speed. This frequency analysis is essential for the effective functioning of radar, as it helps in filtering out noise and optimizing echo returns from targets.

Understanding frequency distribution also aids in spectrum management and ensures that radar systems can operate without interference from other electronic devices within the same frequency bands. Thus, the correct answer centers on how the transmitter's emissions are characterized by the range and spread of frequencies, which is key to radar operation and performance.