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

Combined radar and communications system using common signal waveform

A communication system and radar technology, applied in the system field of radar and communication functions, can solve problems such as performance limitation, limitation of system performance, co-channel interference, etc., to achieve the effect of easy maintenance and upgrade, and cost reduction

Active Publication Date: 2019-12-03
THE BOEING CO
View PDF13 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second issue is the cost associated with the interference (mainly radio frequency (RF) interference) of two such systems on a single platform
Co-channel interference can be a problem when operating simultaneously and can limit the performance of one or both systems
Operating at different times can cause performance limitations
A third issue is the additional cost of maintaining two separate systems, and the upgrades they require

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
  • Combined radar and communications system using common signal waveform
  • Combined radar and communications system using common signal waveform
  • Combined radar and communications system using common signal waveform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0190] Embodiment 1. A combined radar / communication system comprising a common radar / communication transmitter with a transmit antenna and a combined radar and communication receiver with a common receive antenna, wherein the common radar / communication transmitter is configured to transmit A combined radar / communication waveform modulation symbol comprising a combination of symbols, each symbol consisting of an up-chirp signal and a down-chirp signal, and a combined radar and communication receiver comprising:

[0191] a first mixer, which mixes the received signal from the receiving antenna with the transmitted signal, and outputs a first demodulated signal;

[0192] a baseband radar signal processing module configured to estimate the range and range rate of the radar object based on the beat frequency derived from the first demodulated signal;

[0193] a second mixer that mixes a received signal from the receiving antenna with a frequency modulated signal having a center fre...

Embodiment 2

[0195] Embodiment 2. The system of embodiment 1, wherein the up-chirp signal and the down-chirp signal of successive symbols have non-uniform slopes.

Embodiment 3

[0196] Embodiment 3. The system of embodiment 1, wherein the up-chirp signal and the down-chirp signal of successive symbols have non-uniform initial phases.

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

The invention discloses a combined radar and communications system using common signal waveform. A system (130) has a set of common hardware and common signal processing together with a common waveform family that can be used to achieve both efficient radar and efficient communications functions. The system includes a common radar / communications transmitter (131) having a transmission antenna (110) and a combined radar and communications receiver (133) having a common reception antenna (116). The common radar / communications transmitter (131) is configured to transmit combined radar / communications waveform-modulated signals comprising symbols, each symbol consisting of an up chirp and a down chirp. The combined radar and communications receiver (133) includes a baseband radar signal processing module (126) configured to estimate range and range rate of a radar object from the received symbols and a baseband communications signal processing module (138) configured to detect slopes and initial phases of the up and down chirps of each received symbol.

Description

technical field [0001] The techniques disclosed herein generally relate to systems and methods for performing combined radar and communication functions. Background technique [0002] Many platforms, such as aircraft, satellites, submarines and vehicles, require radar and communication capabilities. However, existing solutions for radar and communication functions require adding two separate systems on a platform with all the attendant costs, power supplies and antennas, and free slots on such hardware platforms are scarce. [0003] One problem is the lack of space to install these two supposedly separate hardware groups (radar and communications). Although they might be able to share one antenna if they were nominally the same frequency, this is prevented due to the stove-piped implementation of such different systems. A second problem is the cost associated with the interference (mainly radio frequency (RF) interference) of two such systems on a single platform. When ra...

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 Applications(China)
IPC IPC(8): H04B1/16H04B1/04G01S7/285G01S7/35G01S7/282
CPCH04B1/16H04B1/04G01S7/285G01S7/352G01S7/282G01S7/006G01S13/345G01S7/023G01S7/03H04L25/03248G01S7/06G01S13/90G01S7/003G01S13/34G01S13/58H03D3/009H04L27/2332H04L27/3863G01S13/24
Inventor G·A·雷
Owner THE BOEING CO