Title :
A TBD method using multi-frame coherent integration
Author :
Kun, Wang ; Xiaoling, Zhang
Author_Institution :
Dept. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A TBD (Track Before Detect) method using multi-frame coherent integration is proposed to solve the shortcomings of the TBD method using non-coherent integration which cannot utilize the phase of target echoes effectively and has low accumulation efficiency. In this paper, a new echo model of a moving target is established for multi-frame coherent integration. The method utilizes Keystone transform to correct range migration, then corrects the Doppler spectrum migration using a method called “Dechirping”. Finally, multi-frame coherent integration is implemented for target detection. Simulation results indicate that the TBD method using multi-frame coherent integration can detect the weaker target more effectively, and get a higher detection probability than the TBD methods using noncoherent integration.
Keywords :
Doppler radar; radar cross-sections; radar tracking; target tracking; transforms; Doppler spectrum migration; Keystone transform; TBD method; accumulation efficiency; dechirping; echo model; moving target; multiframe coherent integration; noncoherent integration; target echoes; track before detect method; Azimuth; Doppler effect; Radar tracking; Signal to noise ratio; Target tracking; Transforms; “Dechirping” method; keystone transform; multi-frame coherent integration; range migration;
Conference_Titel :
Synthetic Aperture Radar (APSAR), 2011 3rd International Asia-Pacific Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4577-1351-4
