ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Waveform strategy for phased array active radar seeker
Received date: 2016-04-05
Revised date: 2016-07-18
Online published: 2016-07-19
Supported by
National Natural Science Foundation of China (11273017, 61401207, 61471196); Natural Science Foundation of Jiangsu Province (BK20140793); 2015 College Graduate Scientific Research and Innovation Plan of Jiangsu Province (KYLX15_0375)
This paper considers the range eclipsing problem in a high pulse repetition frequency pulse Doppler (HPRF-PD) phased array active radar seeker. A novel waveform selection strategy is designed. In this strategy, a waveform lookup table concerning range and pulse repetition frequency (PRF) is firstly obtained off-line according to the PRF selection strategy proposed in this study. A method called cross product automatic frequency control with loop filter (CPAFCLF) is then utilized to predict the radial velocity between the seeker and the target of next coherent processing interval (CPI). Meanwhile, a range tracking algorithm called Sage-Husa-based adaptive current statistical model with velocity prediction (SH-ACSMVP) is proposed to obtain a predicted range value for next CPI. Compared with current statistical (CS) model and current statistical model based adaptive unscented Kalman filter (CAUKF), the proposed method exhibits a better range predicting performance in tracking a maneuvering target, with smaller predicted error and faster error convergence. With this predicted value, the transmitting waveform is selected from the waveform lookup table, and a range eclipsing problem will not be generated in the tracking stage. Simulations highlight the correctness and effectiveness of our proposed waveform strategy.
JIANG Bingbing , SHENG Weixing , ZHANG Renli , HAN Yubing , MA Xiaofeng . Waveform strategy for phased array active radar seeker[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017 , 38(4) : 320284 -320284 . DOI: 10.7527/S1000-6893.2016.0215
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