Low-frequency radar
Low-frequency radar is radar which uses frequencies lower than 1 GHz such as L-band, UHF, VHF, and HF, as opposed to the usual radar bands, which range from 2 GHz to 40 GHz.The radar cross section of any target depends on the frequency transmitted by the radar. Below 900 MHz the target radar cross section increases exponentially, however the increased radar cross section means that there is also much more radar return from undesirable sources, such as cloud cover and rain (cf.