What is a monopulic radar?
The monopulse radar is a type of radar that contains more information into the signal. This allows the radar less subject to the problems caused by sudden changes in signal strength. The monopulse radar is also more difficult to get stuck than a conical scanning radar that is used until the 1960s. The radar lobes always illuminate the target when the radar is concentrated on it. The signal will be the strongest when the radar is directed directly to the target, allowing a conical scanning radar to determine the direction of the target. The primary difficulty with conical scanning radar is that other factors such as weather can affect the power of the signal.
The primary difference between the monopulse radar and the cloth scanning radar is that the monopul radar divides its beam into two signals and transmits each signal in a different direction. Review the target signals and are accepted by a radar, which then compares two signals to determine which one is stronger. This allows the radar to determine the direction of the target with greater accuracy than the conical scanning radar. Radar performs this comparison during each pulse, teDy term "monopulse" radar.
The monopulse radar must be able to identify different parts of the beam to compare two signals. The radar usually polarizes each signal separately and transmits each signal through the corners that are slightly out of the center. The signals are then accepted from the target and are again separated by means of a difference in the polarity to the distinction between the signals.
The monopulse radar display usually consists of two overlapping lobes. This provides a high degree of accuracy of targeting when the lobes are close together. The conical scanning radar generally a targeting error of 0.1 degrees and a monopulse radar generally has a maximum error of 0.01 degrees. Advanced systems are usually accurate at 0.006 degrees.
The fact that the monopulic radar produces signals with different polarities makes it difficult to jam than a conical scanning radar. The interference radar must duplicate the polarization and timing of the signal. This is generally impractical, so EleCutronic countermeasures for this type of radar usually consist in transmission of white noise than to generate a false signal.