Radar and Radar Networks

In continuous wave (CW) radar, the transmitter employs a continuous sine wave, which is either unmodulated or modulated. To ensure continuous transmission, CW radars often employ the bistatic configuration. Unmodulated CW radars could be used to measure the relative velocity of a target by measuring the Doppler shift between the transmit waveform and the radar echoes. The radar average transmitted power is the product of the output power of the transmitter and the duration of the transmission. Radar antenna plays a significant role in determining radar sensitivity and resolution. Phased-array antenna consists of a large amount of individual radiation elements. In monostatic radar systems, the transmit and receive antennas are collocated. Co-located multiple-input–multiple-output radar employs transmit and receive arrays with a small aperture.