Unlock instant, AI-driven research and patent intelligence for your innovation.

A Waveform Design Method for Radar Communication Integration

A waveform design and radar technology, applied in multi-carrier systems, modulated carrier systems, radio wave measurement systems, etc., can solve the problem of low spectrum utilization and achieve the effect of improving spectrum efficiency

Active Publication Date: 2022-04-05
CHONGQING UNIV +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these modulation methods belong to low-order modulation, and the spectrum utilization rate is low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Waveform Design Method for Radar Communication Integration
  • A Waveform Design Method for Radar Communication Integration
  • A Waveform Design Method for Radar Communication Integration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] In the radar communication integration technology, the transmitter transmits the radar communication integration signal, so that the radar and communication share the transmitter. The linear frequency modulation (LFM) pulse generated by the radar is used as the carrier of the communication signal to realize the integrated waveform design. Among various communication digital modulation methods, 16QAM is a high-order modulation and has the characteristics of high spectrum utilization.

[0016] Input communication baseband signal sequence {a i} length is T, contains 4N bits in total, each bit a i =±1, the time width of each bit is T a , where i=1,2,...,4N, and T=4N·T a ; The baseband signal sequence passes through the bit mapping module, and outputs two parallel symbol sequences {b n} and {c n}, each symbol sequence contains N symbols, each symbol has 4 values, respectively ±1 and ±3, and the time width of each symbol is T bc , where n=1,2,...,N, and T bc = 4T a . ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A radar communication integrated waveform design method, characterized in that: input communication baseband signal sequence {a i} Through the bit mapping module, output two parallel symbol sequences {b n} and {c n}; 16 situations of every 4 consecutive input bits of the bit mapping module correspond to 16 situations of the output symbol sequence; the two-way symbol sequence {b n} and {c n}, respectively with the chirp quadrature carrier s generated by the local oscillator module I (t) and s Q (t) multiply; in symbol b n and c n The two output signals multiplied during the existence period are respectively p(t) and q(t); the final output signal of the integrated radar communication waveform is z(t)=p(t)+q(t). The invention uses the linear frequency modulation pulse as the carrier of the 16QAM modulation signal, improves the spectrum utilization rate, and can be used in the technical field of radar communication integration.

Description

technical field [0001] The invention relates to the field of radar communication integration, in particular to a radar communication integration waveform design method. [0002] technical background [0003] In radar communication integration technology, the transmitter can adopt integrated waveform design, that is, the organic combination of radar detection waveform and communication waveform. The design method of this shared waveform is to realize communication without affecting the radar detection function. The modulation information carried on the waveform is demodulated in the communication signal processing module of the receiver to realize the communication function; the echo of the waveform is processed and analyzed by the radar signal processing module in the receiver to obtain information such as the position, speed and shape of the target. The Linear Frequency Modulation (LFM) signal is a common radar pulse waveform. Using this waveform as a carrier, it can be comb...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/282H04L27/34H04L27/36
CPCH04L27/34H04L27/362G01S7/282
Inventor 曾浩吉利霞赵云霄方贝贝董涛殷杰
Owner CHONGQING UNIV