Autocorrelation Function Of Return Waveforms In High Precision Spaceborne Radar Altimeters Employing Chirp Transmit Pulses

摘要

This paper analyses the autocorrelation function of return waveforms in high precision radar altimeters employing chirp-pulse transmit signal under the condition of near-nadir deviations of the antenna bore-sight axis. It is shown that in case of ultra wideband transmit signals providing very high time resolution the correlation function can be approximated by a product of two separate functions of time.