Researches of a new kind of advanced meter wave radar

Synthetic impulse and aperture radar (SIAR) is new kind of advanced meter wave radar. Stealth techniques and anti-radiation missiles (ARM) raise challenges to military radar. Many research results show that meter (or much longer) wavelength electromagnetic waves are the right way against the stealth technique and ARMs. However, traditional meter wave radar has many disadvantages, such as poor angle resolution, weakness against ECM, low measurement precision etc. The new concept of synthetic impulse and aperture radar was presented, by J. Dorey et al. (see Colloque International sur le Radar, p.556-62, 1989). SIAR has no scanning mechanism or phased devices. The beams or antenna patterns of both the transmitting array and the receiving array are formed by digital calculation. SIAR can keep the advantages of traditional meter wave radar and overcome most of its disadvantages. This new kind of radar has many other advantages, for example, low probabilities of interception (LPI), capacity of long coherent integration of targets and fine Doppler resolution, high feasibility of system processing, etc. The basic concepts of SIAR and some experimental results are introduced.