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Method for detecting distance and speed based on orthogonal baseband signals with any step length

A technology of orthogonal baseband signals and detection methods, applied in speed detection, based on the distance field of orthogonal baseband signals with arbitrary step lengths, can solve the problem of low detection speed

Inactive Publication Date: 2014-12-31
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the low detection speed caused by the need to wait for the echo of the first sent signal for the second transmission of the existing radar, the present invention provides a distance and speed detection method based on an arbitrary step-length orthogonal baseband signal

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  • Method for detecting distance and speed based on orthogonal baseband signals with any step length
  • Method for detecting distance and speed based on orthogonal baseband signals with any step length
  • Method for detecting distance and speed based on orthogonal baseband signals with any step length

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Embodiment Construction

[0023] The specific steps of the method for detecting distance and speed based on orthogonal baseband signals of arbitrary step length in the present invention are as follows:

[0024] 1. The sending signal is:

[0025] X i = 1 n ξ i { iω [ t + ( T ini ( - n ) + T - n ) - X j = - n i ( T inij + T j + T endj ) ] } { u [ t + ( T ini ( - n ) + T - n ) - X j = - n i ( T inij + T j + T endj ) ] -

[0026] u [ t + ( T ini ( - n ) + T - n ) - X j = - n i + 1 ( T inij + T j + T endj ) ] }

[0027] among them:

[0028] ξ 1 ( ωt ) = cos [ a cos - 1 ( 1 - 2 ωt / b ) ] ξ 2 ( ωt ) = 2 ξ 1 ( ωt ) ...

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Abstract

The invention discloses a method for detecting a distance and a speed based on orthogonal baseband signals with any step length, which is used for solving a technical problem of low detection speed as the existing radar needs to wait for receiving an echo of a signal sent for the first time and then sends the signal for the second time. The method adopts the following technical scheme: continuously sending a string of the orthogonal baseband signals with any step length; effectively authenticating through the echoes; carrying out signal decoding on echo integral of the one string of the orthogonal baseband signals with any step length; and separating the echoes of the baseband signals sent in different time. Therefore, the detection efficiency of the radar is improved.

Description

Technical field [0001] The invention belongs to the field of radar tracking performance, and particularly relates to a distance and speed detection method based on orthogonal baseband signals of arbitrary step length. Background technique [0002] Radar is an electronic device that uses microwave band electromagnetic waves to detect targets. In modern warfare combat command systems, it is a means of acquiring information and a sensor that collects various military intelligence. It has the ability to find targets at a long distance, determine target coordinates and other parameters quickly. , Can work around the clock, etc.; when the radar system is installed on various combat platforms such as aircraft, ships, tanks, missiles, etc., it becomes a guarantee for weapon equipment to carry out precise strikes on targets, and is a multiplier that exerts its combat performance; It is widely used in security, guidance, weapon control, reconnaissance, surveying, navigation support, identi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/08G01S13/58
Inventor 史忠科
Owner NORTHWESTERN POLYTECHNICAL UNIV