General typical target characteristic simulation system

A technology for simulating systems and typical targets, applied in the field of general-purpose typical target characteristic simulation systems, which can solve the problems of large size and weight, poor versatility, and large insertion loss, and achieve small size, no clutter interference, and low insertion loss. Effect

Inactive Publication Date: 2018-06-15
GUIZHOU AEROSPACE ELECTRONICS TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of using the inherent delay of the radio frequency cable to realize the simulation of the target distance has large volume and weight, large insertion loss and high cost
The method of using up-conversion and down-conversion and combining software to realize the target distance simulation method, because the method itself takes a long time for signal processing, is only suitable for the simulation of medium and long-range target distances, and there are certain limitations in use, and the method , The down-conversion circuit is complex, the software code is many, and the versatility is not good
For the delayed signal, the Doppler frequency is multiplied, and then sent to the DA output after up-conversion to realize the method of echo Doppler frequency simulation. The circuit is relatively complicated and the volume is also large.

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
  • General typical target characteristic simulation system
  • General typical target characteristic simulation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.

[0018] Such as figure 1 A general typical target characteristic simulation system shown, including sequentially connected I / O mixer, modulator, delay fiber, demodulator, receiver; the output terminal of the product under test is connected to the I / O mixer At the input end, the I / O mixer is also connected with two quadrature signals; the delay fiber length is equal to the target distance to be simulated.

[0019] An attenuator is also connected between the demodulator and the receiving end.

[0020] The attenuator is a digitally controlled electronically adjustable attenuator.

[0021] The continuously adjustable dynamic range of the attenuation of the attenuator is 0dB-31.5dB.

[0022] The attenuation adjustment step of the attenuator is 0.5dB.

[0023] The two quadrature signals connected to the I / O mixer are sinusoidal modula...

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 general typical target characteristic simulation system which comprises an I / O frequency mixer, a modulator, a time delay optical fiber, a demodulator, a receiving end that are successively connected, the output end of the tested product is connected to the input end of the I / O frequency mixer and the I / O frequency mixer is further connected with two orthogonal signals, and the length of the time delay optical fiber is equal to the target distance required to be simulated. The device is small in size, light in weight, free of clutter interference, high in harmonic suppression degree, low in insertion loss, high in distance simulation precision, high in frequency precision, good in frequency stability, low in power consumption is low, and good in economical efficiency.

Description

technical field [0001] The invention relates to a general typical target characteristic simulation system. Background technique [0002] When a product is tested, it is necessary to simulate the characteristics of its typical target. The target characteristics include: target distance, echo Doppler frequency, and echo attenuation. [0003] For the simulation of the target distance in the range of 0.5m to 35m, the traditional method is to use the inherent delay of the radio frequency cable to realize the simulation, and for the simulation of the target distance in the range of 35m to 200m, the traditional method is to use down-conversion technology to convert the frequency to About 300MHz, and then use signal processing technology combined with software to simulate the delay time. For the simulation of the echo Doppler frequency, the traditional method is to multiply the delayed signal by the Doppler frequency, and then send it to the DA output after up-conversion. The comm...

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): G01S13/50G01S7/40
CPCG01S7/4052G01S13/505
Inventor 魏伟
Owner GUIZHOU AEROSPACE ELECTRONICS TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap