Autocorrelation Function of Return Waveforms in High Precision Spaceborne Radar Altimeters Employing Chirp Transmit Pulses

Min-Ho KA  Aleksandr I. BASKAKOV  Anatoliy A. KONONOV  

IEICE TRANSACTIONS on Communications   Vol.E90-B   No.11   pp.3237-3245
Publication Date: 2007/11/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.11.3237
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Sensing
autocorrelation function,  correlation interval,  remote sensing,  spaceborne radar altimeter,  ultra wideband signals,  

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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 boresight 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.