Doppler Tolerant Convolutional Windows for Radar Pulse Compression
نویسندگان
چکیده
Pulse compression technique is used to enhance radar performance in terms of more efficient use of high power transmitters and increasing the system resolving capability. The polyphase pulse compression codes (P3 and P4) which are derived from linear frequency modulated waveforms have low sidelobes and are Doppler tolerant. To reduce the sidelobes further different types of windows have been used as the weighing function at the receiver. In this paper convolutional windows are used as weighing function for radar pulse compression which are more insensitive to Doppler shift as compared to conventional windows. From simulation study it is observed that the radar pulse compression technique using convolutional window as weighing function provides higher peak to sidelobe ratio (PSR) at higher Doppler shifts.
منابع مشابه
Assessment of Weighting Functions Used in Oppermann Codes in Polyphase Pulse Compression Radars
Polyphase is a common class of pulse compression waveforms in the radar systems. Oppermann code is one of the used codes with polyphone pattern. After compression, this code has little tolerant against Doppler shift in addition to its high side lobe level. This indicates that the use of Oppermann code is an unsuitable scheme to radars applications. This paper shows that the use of amplitude wei...
متن کاملExtending the Radar Dynamic Range using Adaptive Pulse Compression
The matched filter in the radar receiver is only adapted to the transmitted signal version and its output will be wasted due to non-matching with the received signal from the environment. The sidelobes amplitude of the matched filter output in pulse compression radars are dependent on the transmitted coded waveforms that extended as much as the length of the code on both sides of the target loc...
متن کاملA novel Doppler-tolerant polyphase codes for pulse compression based on hyperbolic frequency modulation
The conventional polyphase pulse compression codes including Frank code, P1, P2, P3, and P4 code suffer severe signal loss in performance under Doppler environment. This paper proposed a new polyphase pulse compression codes which are conceptually derived from the step approximation of the phase curve of the hyperbolic frequency modulated chirp signal. Comparing with the above conventional code...
متن کاملOptimization of Digital Signal Processing Techniques for Surveillance RADAR
Digital Signal Processing techniques for ground surveillance RADAR has been thoroughly investigated and optimized for an improved detection of target. Using the established techniques like Pulse compression, Fast Fourier Transform and Windowing, the present work optimizes the selection of pulse coding techniques, window type and different filters.The work proposes techniques to mitigate inheren...
متن کاملHigh Resolution Low Power Radar Pulse Compression Techniques
Pulse Compression Techniques are used in Radar systems to avail the benefits of large range detection capability of long duration pulse and high range resolution capability of short duration pulse with low power consumption. In this paper, details of these techniques are given which achieves high range resolution and low peak sidelobe levels under various noise conditions, Doppler shift and mul...
متن کامل