Adaptive instantaneous frequency ridge extraction based on target tracking for frequency-modulated signals

2021 ◽  
Author(s):  
Yue Hu ◽  
Xiaotong Tu ◽  
Fucai Li ◽  
Yanping Zhu ◽  
Jing Lu
Keyword(s):  
Target Tracking ◽  
Instantaneous Frequency ◽  
Modulated Signals

scholarly journals FPGA based Identification of Frequency and Phase Modulated Signals by Time Domain Digital Techniques for ELINT Systems

2021 ◽  
Vol 71 (1) ◽  
pp. 79-86
Author(s):  
R.K. Niranjan ◽  
C.B. Rama Rao ◽  
A.K. Singh
Keyword(s):  
Time Domain ◽  
Frequency Modulation ◽  
Instantaneous Frequency ◽  
Linear Frequency Modulation ◽  
Digital Technique ◽  
Linear Frequency ◽  
Intelligence System ◽  
Modulation Type ◽  
Modulated Signals ◽  
Electronic Intelligence

In this paper, a decision tree algorithm based on time-domain digital technique is developed for the identification and classification of diverse radar intra-pulse modulated signals for the electronic intelligence system in real-time. This includes linear frequency modulation, non-linear frequency modulation, stepped frequency modulation and bi-phase modulation. The received signal is digitised and the instantaneous phase and high accuracy instantaneous frequency are estimated. The instantaneous amplitude is also estimated to get the start and stop of the pulse. Instantaneous parameters are estimated using a moving autocorrelation technique. The proposed algorithm is employed on the instantaneous frequency and the modulation is identified. The modulation type and modulation parameter are important for unique radar identification when similar radars are operating in a dense environment. Simulations are carried out at various SNR conditions and results are presented. The model for algorithm is developed using a system generator and implemented in FPGA. These results are compared when the proposed algorithm is used with the existing digital in-phase and quadrature-phase (DIQ) technique of instantaneous frequency and amplitude estimation.

Measurement preprocessing for nonlinear target tracking

1993 ◽  
Vol 140 (5) ◽  
pp. 316 ◽  
Author(s):  
T.C. Wang ◽  
P.K. Varshney
Keyword(s):  
Target Tracking
Sign in / Sign up

Export Citation Format

Share Document