Device design and signal processing method for multiple calibration and background extraction in target rcs measurement

A design method, background technology, applied in the field of communication and radar

Active Publication Date: 2018-04-03
BEIHANG UNIV
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Problems solved by technology

[0066] The problem faced by background measurement and extraction is: for the test field using metal brackets, the background echo used for background cancellation cannot be obtained through direct measurement, because the top of the target bracket is equipped with a turntable, which is hidden in the target when measuring the target. It is inside the abdominal cavity of the target to be measured, so the echo of turning the top when measuring the target will not have a substantial impact on the total radar echo

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  • Device design and signal processing method for multiple calibration and background extraction in target rcs measurement
  • Device design and signal processing method for multiple calibration and background extraction in target rcs measurement
  • Device design and signal processing method for multiple calibration and background extraction in target rcs measurement

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Embodiment Construction

[0125] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0126] The SCAM standard calibration body is used to simultaneously complete background auxiliary measurement, background extraction and offset processing, and target RCS measurement multiple calibration measurement and processing. The specific steps are as follows:

[0127] Step-1: Geometric shape design and manufacturing of SCAM standard calibration body

[0128] According to the requirements of RCS multiple calibration and background auxiliary measurement and extraction for the external dimensions of SCAM standard calibration body, the external parameters of standard calibration body are selected. The main parameters include large cylinder size a, small cylinder size b, and height h. The meaning of each parameter is as Figure 5 shown. SCAM shape parameters and center of rotation ( Figure 5 The selection of point o) in (b) should compreh...

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Abstract

The invention discloses a device for multiple calibration and background extraction in target radar scattering cross section (RCS) measurement and a signal processing method thereof. The invention provides a new calibration member appearance design. By means of a designed novel calibration member (SCAM), just through one 360-DEG direction rotation measurement, data required for background auxiliary measurement, extracting and counteracting processing, and RCS multiple calibration measurement and processing can be simultaneously obtained. The novel calibration member (SCAM) provided by the invention realizes an improvement on the appearance of an existing CAM calibration member and furthermore eliminates inherent defects in background extraction auxiliary measurement and RCS calibration processing by an international universal traditional cylindrical calibration member and a CAM calibration member.

Description

technical field [0001] The invention relates to the technical fields of communication and radar, in particular to a device design and a signal processing method for radar cross section (RCS) calibration and background extraction in target electromagnetic scattering measurement. Background technique [0002] Microwave anechoic chamber and external field static measurement of scaled models or full-scale targets are important experimental means for low-scattering design, verification and improvement of low detectable targets. In the static measurement of microwave anechoic chamber and RCS in the field, low-scattering brackets are generally used to support the measured target, the measuring radar at a distance is fixed, and the target placed on the bracket rotates in azimuth, and the measuring radar records the rotating target at different azimuths and corners. After the scattered echoes are processed by background cancellation and calibration, the all-round RCS measurement data...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41G01S7/02
CPCG01S7/021G01S7/414G01S7/418
Inventor 许小剑刘永泽
Owner BEIHANG UNIV
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