Experimental method for radar target angle measurement

A technology of target angle and experimental method, which is applied in the field of radar target measurement, can solve problems such as large error, low reliability, and cumbersome process, and achieve the effect of reducing angle measurement error and ensuring accuracy

Pending Publication Date: 2021-04-23
SHANGHAI AEROSPACE ELECTRONICS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of cumbersome process, large error and low reliability of current

Method used

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  • Experimental method for radar target angle measurement
  • Experimental method for radar target angle measurement
  • Experimental method for radar target angle measurement

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0043]Example 1: Still target.

[0044]JoinFigure 1 to 2To specifically explain the present embodiment:

[0045]Step 1, build an experimental system for the radar measurement target angle. First, the radar is first, determine the center axis of the measurement system, take H = 5 meters, determine the offset of different angles (± 9 °, ± 5 °, ± 5 °, ± 3 °) depending on the relationship L = H · Tan θ Connecting the radar in the ground projection and offset point, draw a marking line, seefigure 1 .

[0046]Step 2, the radar antenna points to calibration. Place the fixture on the center axis of the angle measurement system, constantly adjust the antenna to point to and measure the angle of the fixture body, so that the angle of the fixture is smaller than the threshold value δ (Δ = 1 °), the angle of the calibration is recorded as θ.T.

[0047]Step 3, placing the target in a plurality of angles (± 9 °, ± 7 °, ± 5 °, ± 3 °) marking lines within the radar beam range, using the angle of the radar meas...

Example Embodiment

[0049]Example 2: Sports Goals.

Example Embodiment

[0050]Joinfigure 1 ,image 3 withFigure 4 To specifically explain the present embodiment:

[0051]Step 1, set the radar, determine the spindle, select the first line near the spindle, ie the center axis, and draw a marking line of different angles (6 °, ± 3 °) on the ground.

[0052]Step 2, the radar antenna points to calibration. If the test environment or test conditions do not change, there is no need to point to the radar antenna to re-calibration. Set the threshold δ = 1 °.

[0053]Step 3, place the target on a marker line (-6 °, -3 °, + 3 °) within the radar beam range, and reciprocate the moving platform along the marking line, using the angle of the radar measurement target. Test diagrams are shown in 3.

[0054]Step 4, a set of angular data measured for each angle first subtract the antenna spindle pointing angle θTThen, the average is then reduced to the actual angle. Measurement resultsFigure 4 Indicated.

[0055]We conducted statistics on different angles of test results, and the angle ...

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Abstract

The embodiment of the invention provides an experimental method for measuring a target angle by a radar, which is characterized by comprising the following steps of: 1, erecting the radar, selecting a first line passing through the radar, namely a central axis, and then selecting two marking lines on two sides of the central axis according to a selected included angle and the included angle, wherein the marking lines are used for marking a moving track of a target; 2, performing radar antenna pointing calibration; 3, placing a target on the marking lines, and measuring the angles of the target through the radar; and 4, processing the angle data measured on each angle marking line to obtain a target angle. The measured target angles are averaged, then a antenna main shaft pointing angle is subtracted, and the result is recorded as the final target angle.

Description

technical field [0001] The invention belongs to the field of radar target measurement and relates to an experimental method for radar target angle measurement. Background technique [0002] The signal generated by the radar transmitter is radiated outward through the transmitting antenna, and the signal is reflected or scattered after encountering the target. The receiving antenna of the radar sends the received reflected signal (echo signal) to the radar receiver to complete frequency conversion, filtering, amplification, etc. processing to form an intermediate frequency signal. The intermediate frequency signal is sampled and digitally processed in the signal processor to complete the measurement of the target parameters. Radar can measure the range and velocity of a target, and if it has multiple receive antennas or if the antenna beam is steerable, it can also measure the angle of the target. There are different systems of radars for different application scenarios. Co...

Claims

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Application Information

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IPC IPC(8): G01S13/42G01S13/58G01S13/08G01S7/40
CPCG01S13/42G01S13/58G01S13/08G01S7/40
Inventor 颜卫忠陈栋志孔凡伟钱婧怡白旭东
Owner SHANGHAI AEROSPACE ELECTRONICS CO LTD
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