Maneuvering target parameter estimation method by combining correction RFT (Radon-Fourier Transform) and MDCFT (Modified Discrete Chirp-Fourier Transform)

The invention discloses a maneuvering target parameter estimation method by combining correction RFT (Radon-Fourier Transform) and MDCFT (Modified Discrete Chirp-Fourier Transform). According to the method, a method for searching target echo data through the RFT is improved by using a previously kno...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: LI HAI, MA DI, WU RENBIAO
Format: Patent
Sprache:eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The invention discloses a maneuvering target parameter estimation method by combining correction RFT (Radon-Fourier Transform) and MDCFT (Modified Discrete Chirp-Fourier Transform). According to the method, a method for searching target echo data through the RFT is improved by using a previously known parameter range for movement of a maneuvering target, so the target echo data with a range curve can be taken out, corresponding matching processing is performed on the basis of the taken echo data, and further estimated values of initial speed and acceleration of the target are obtained. According to the method, a better maneuvering target parameter estimation result can be obtained under the conditions of limited radar pulse accumulation pulse number and low signal-noise ratio. According to the method, the target speed estimation result is compared with estimation results of MTD (Moving Target Detection), RFT, fractional fourier transform and Radon-fractional fourier transform methods; besides, the estimation result of the target acceleration by the method is compared with the estimation results of the fractional fourier transform and the Radon-fractional fourier transform methods, and the experimental result proves the effectiveness of the method.