13-Bit Barker Code + Linear Frequency Modulation Signal

This study employs a 13-bit Barker code combined with a linear frequency modulation (LFM) signal, where the composite signal undergoes pulse compression processing with intermediate demodulation stages. These processing steps are designed to optimize signal transmission and analysis capabilities. Pulse compression processing effectively reduces the temporal duration of the signal while enhancing both resolution and anti-interference performance. From an implementation perspective, this typically involves matched filtering techniques where the received signal is convolved with a time-reversed version of the transmitted waveform. For Barker codes, this exploits their ideal autocorrelation properties to achieve sharp peak detection, while LFM components provide additional frequency-domain processing gains. Demodulation processing serves to recover the original baseband signal from its modulated carrier state, enabling subsequent analysis and data extraction. In practical implementations, this often involves quadrature demodulation techniques using I/Q components, followed by low-pass filtering to isolate the information-bearing signal components. The integration of these signal processing techniques significantly enhances overall system performance by improving target detection accuracy, increasing signal-to-noise ratio, and providing robust performance in noisy environments. The combination of Barker code's pulse compression advantages with LFM's Doppler tolerance makes this approach particularly suitable for radar and advanced communication systems.