Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multicarrier radar system maximum likelihood distance estimation algorithm

A radar system and distance estimation technology, applied in the field of maximum likelihood distance estimation algorithm, which can solve problems such as lack of research progress

Active Publication Date: 2018-09-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF15 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, there has been no research progress in this direction in the world for more than 60 years

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
  • Multicarrier radar system maximum likelihood distance estimation algorithm
  • Multicarrier radar system maximum likelihood distance estimation algorithm
  • Multicarrier radar system maximum likelihood distance estimation algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0049] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as here...

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 provides a multicarrier radar system maximum likelihood distance estimation algorithm for estimating the distance information of the target. Supposing that the reflection coefficient isa constant for single target detection under the complex additive white Gaussian noise (CAWGN), the probability density distribution and the distance mutual information of the target distance under different signal-to-noise ratios are obtained by using the Zadoff-Chu multicarrier signal, and the Cramer-Rao bound (CRB) of the distance variance and the analytical expression of the distance mutual information under the condition of high signal-to-noise ratio can be obtained. The simulation result indicates that the distance mutual information of the target and the signal-to-noise ratio have a linear relation under the condition of high signal-to-noise ratio, and the time bandwidth product (TBP) of the radar detection system is doubled and the distance mutual information is increased for 1.5 bits. The simulation result proves the correctness of theoretical analysis. The conclusion has important theoretical guidance significance for actual design of the radar detection system.

Description

technical field [0001] The invention belongs to the technical field of information transmission and processing, in particular to a maximum likelihood distance estimation algorithm for a multi-carrier radar system. Background technique [0002] The use of multi-carrier signals in radar has attracted considerable interest in recent years. Multi-carrier radar signals can be regarded as quantized frequency-domain signals, which can be synthesized with large bandwidth to obtain high range resolution, and the sub-carrier form is suitable for multi-channel structure to obtain the advantages of narrow-band processing, which conforms to the trend of multi-band modern radar. Multi-carrier radar can use phase compensation and coherent synthesis to detect stationary targets, and the processed signal peak position corresponds to the distance of the target. Orthogonal frequency division multiplexing (OFDM) is to modulate the data stream with multiple mutually orthogonal subcarriers, so i...

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): G01S7/41G01S13/88
CPCG01S7/418G01S13/88
Inventor 陈月徐大专邓昭陈越帅卢智聪
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com