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Method for quick passive ranging using external radiation source

A technology of external radiation source and passive ranging, applied in the field of electronic information

Active Publication Date: 2019-02-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the distance between the target and the observation station, the relationship between the previously measured quantity and the current measured quantity is nonlinear, it is necessary to solve the problem of using the previously measured quantity and the current measured quantity to quickly determine the distance between the target and the observatory station. problem of distance

Method used

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  • Method for quick passive ranging using external radiation source
  • Method for quick passive ranging using external radiation source
  • Method for quick passive ranging using external radiation source

Examples

Experimental program
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Embodiment

[0030] In this example, the position coordinates of the observation station are (0, 0, 10), the coordinates of the external radiation source are (0, 10000, 20), and the coordinates of the target position are (-17810.4, 98401.2, 5568.8). The units are all meters. The azimuth of the incoming wave of the target relative to the antenna array of the observation station is 100.2594 degrees, the elevation angle is 3.1876 degrees, the distance between the target and the observation station is 100.1496 kilometers, and the arrival time difference between the direct wave of the external radiation source signal and the target reflected wave is 601.67 microseconds.

[0031] The purpose of the present invention is by the position coordinates of the measured observation station, the position coordinates of the external radiation source measured and the incoming azimuth and elevation angle of the target reflected wave measured by the antenna array of the observation station, the measured exter...

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Abstract

The invention belongs to the technical field of electronic information, and relates to a method for quick passive ranging using an external radiation source. The method firstly uses the antenna arrayof an observation station to measure an arrival azimuth and an elevation angle of a target reflected wave, and then measures the arrival time difference between a direct wave of an external radiationsource signal and the target reflected wave, and finally performs fast passive ranging on the target. The method only needs an observation station with an antenna array and an external radiation source signal to realize the purpose of quickly determining the distance between the target and the observation station by using the measured position coordinates of the observation station, the measured position coordinates of external radiation source, the arrival azimuth and the elevation angle of the target reflected waves measured by the antenna array of the observation station, and the measured time difference between the direct wave of the external radiation source signal and the target reflected wave when the target position is unknown.

Description

technical field [0001] The invention belongs to the technical field of electronic information, and specifically relates to a method of receiving the direct wave of the external radiation source signal and the target reflected wave by using the antenna array of the observation station, and measuring the azimuth, the elevation angle of the target reflected wave and the direct wave of the external radiation source signal measured by the antenna array of the observation station. The time difference of arrival between the reflected wave of the target and the reflected wave of the target, and the method of fast passive ranging of the target. Background technique [0002] Observation stations receiving electromagnetic wave signals use electromagnetic wave signals emitted by external radiation sources that already exist in the environment to detect targets that do not radiate but reflect electromagnetic wave signals. The location where the electromagnetic wave signal exposes itself ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S11/00
CPCG01S11/00
Inventor 丁学科万群胡泽鹏李逸君宋媛媛张露西王长生
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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