Abstract
The construction of digital radar simulation systems has been a research hotspot of the radar field. This paper focuses on theoretical analysis and simulation of multi-target echo signals produced in a phased array radar system, and constructs an array antenna element and a signal generation environment. The antenna element is able to simulate planar arrays and optimizes these arrays by adding window functions. And the signal environment can model and simulate radar transmission signals, radar internal noise, clutter and jamming signals. These signals are combined linearly to generate the radar echo signal. The simulation results indicate that multi-target echo signals are completely overwhelmed by other signals, satisfying the needs of subsequent signal processing and data processing.
Highlights
In recent years, many countries have been generalizing the phased array radar technology vigorously
The evaluation implemented with traditional methods become more difficult and the semi-physical or all-digital simulation method can be employed to fulfill design and evaluation of the radar system [1]
The generation of radar echo signals is of great importance to radar simulation systems
Summary
Many countries have been generalizing the phased array radar technology vigorously. Investigated the radar echo waveform and analyzed the performances of the target and sea clutter signals, reporting that the compound signal waveform could simulate the radar system’s echo signal well, by superposing the targets, K distribution clutter and white a Gaussian noise signals. Simulink as the simulation platform, and their radar echo signal is the linear combination of target echo, Rayleigh distribution clutter and Gaussian white noise signals. The target echo signal are investigated in detail, and noise, clutter and jamming signals are analyzed and simulated respectively. These four signals are combined to create radar echo signals, approximating the true radar returns. Even if the echo signal has a larger frequency shift, the same filter can be applied to accomplish the pulse compression
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