Method of measuring the phase errors in linear frequency-modulated and pulse-compression radar systems

1966 ◽  
Vol 2 (2) ◽  
pp. 50 ◽  
Author(s):  
M.J. Withers
Keyword(s):  
Pulse Compression ◽  
Linear Frequency ◽  
Phase Errors ◽  
Radar Systems ◽  
Pulse Compression Radar

scholarly journals Convolutional Windows for Side Lobe Reduction

2019 ◽  
Vol 8 (10) ◽  
pp. 3526-3529
Keyword(s):  
Frequency Modulation ◽  
Pulse Compression ◽  
Side Lobe ◽  
Linear Frequency Modulation ◽  
Side Lobe Level ◽  
Chirp Signal ◽  
Sidelobe Level ◽  
Linear Frequency ◽  
Radar Systems ◽  
Window Functions

A lot of applications in radar systems necessitate low range side-lobe performance which is achieved by pulse compression processing. Linear Frequency Modulation (LFM) signal is mainly used chirp signal for this processing. The paramount drawback in LFM is the first side-lobe level of -13dB at the receiver side. In this paper, LFM signal is modified by using simple two-stage piece wise linear frequency modulation (PWLFM) functions. The autocorrelation function of this PWLFM signal exhibited low peak sidelobe level ratio (PSLR) value compared to its counterpart LFM signal. An attempt is made to further reduce the side lobe values by using novel Convolutional windows. The simulation results confirm a significant side lobe reduction by the LFM signal designed using PWLFM functions when a more flexible Power of Cosine window function is applied compared to all other window functions.

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