A radar communication integrated system based on ce-ofdm

Abstract

The invention belongs to the technical field of radar, and relates to a CE-OFDM-based integrated radar communication system. The present invention proposes a CE-OFDM-based super-resolution radar communication integration solution through communication information compensation that can improve the effective data transmission rate and solve the problem of excessively high PAPR of OFDM signals based on the traditional OFDM communication radar integration solution. The sending end firstly converts the data to be sent into a CE‑OFDM symbol frame through QAM modulation, IFFT transformation and phase modulation, and replaces a single pulse in a pulse repetition period with a frame of CE‑OFDM symbols, thereby increasing the data transmission rate and solving the problem of Send signal PAPR too high problem. At the receiving end, after demodulating the received waveform pulse, the signal can be demodulated by the reverse process of the CE-OFDM system transmission process, and the data can be demodulated; and since the transmitted waveform is known, the pulse compression processing is performed on the received echo, and the communication After information compensation, the super-resolution estimation of the distance and speed of the target can be completed through decoherence processing and MUSIC algorithm.

Description

technical field [0001] The invention belongs to the technical field of radar, and relates to a radar communication integrated system based on CE-OFDM (Constant Envelope Orthogonal Frequency-Division Multiplexing, Constant Envelope Orthogonal Frequency-Division Multiplexing). Background technique [0002] With the continuous development of science and technology, in order to meet the communication needs in the new electromagnetic environment, the number of electronic devices installed on the same platform is gradually increasing, resulting in increased system volume, energy consumption and weight, complex operations, increased redundancy, and electromagnetic interference between devices. Increased interference, system performance degradation and many other problems. Using a multi-functional integrated electronic system is an effective way to solve the above problems. The multiplexing method and the signal sharing method are proposed. Using the signal sharing method can realiz...

AI Technical Summary

Problems solved by technology

While the traditional integrated system using OFDM radar has the advantages of high-resolution detection and relatively fast communication, it also has problems. The main reason is that the measurement of high-resolution distance and speed requires a huge amount of calculation, and the OFDM system has inherent PARR. too high problem

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