Reducing the Sidelobes in Doppler-Range Beam Pattern and Controlling the Frequency Channel in SIAR

Synthetic impulse and aperture radar (SIAR) is a multi-input multi-output orthogonal multicarrier frequency radar, kind of diverse array (FDA). This has omnidirectional emission in the transmitter each receiver or receiving can form beam. The 4D matched filter this radar’s circular arrays reveal range, elevation angle, azimuth Doppler. existence high sidelobe range-Doppler one significant challenges pulse-to-pulse code non-agile (PPFCNA) agile (PPFCA) are often used to reduce it. Weighting available methods for reducing sidelobes radars, but weighting more effective SIAR radars due their ability transmit signals with different frequencies. paper proposes use amplitude submatched filter, which made possible by increasing degree freedom process. In method, receiver’s signal independently processed weighted filter. Then, synthetic pulse formed combining data from multiple channels. output simulation PPFCNA indicates an 8.7908 dB reduction sidelobes, while PPFCA 3.3779 sidelobes.