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System for simultaneously conducting radar RCS calibration and exterior measurement calibration based on calibration satellite

A calibration system and satellite technology, applied to radio wave measurement systems, instruments, etc., can solve the problems of not being able to use RCS calibration, affecting the validity of calibration results, and low efficiency of ground radar calibration

Active Publication Date: 2016-11-09
NO 63921 UNIT OF PLA
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Problems solved by technology

For example, the RADCAL satellite carries a GPS receiver on the satellite, and the Larets calibration satellite is equipped with a laser angle reflector. The disadvantage of this design method is that the satellite can only provide high-precision position reference for external calibration, while Cannot be used for RCS calibration
[0006] Based on the design methods and services provided by existing calibration satellites, when ground radar is calibrated, it is necessary to select RCS calibration satellites and external measurement calibration satellites respectively, and perform RCS calibration and external measurement calibration work in time-sharing. The efficiency of the calibration is low, and if the interval between the external calibration and the RCS calibration is too long, the validity of the calibration results will be affected due to the change of the radar state

Method used

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  • System for simultaneously conducting radar RCS calibration and exterior measurement calibration based on calibration satellite
  • System for simultaneously conducting radar RCS calibration and exterior measurement calibration based on calibration satellite
  • System for simultaneously conducting radar RCS calibration and exterior measurement calibration based on calibration satellite

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Embodiment Construction

[0072] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0073] The multifunctional calibration satellite is composed of a microsatellite platform and a payload. The microsatellite platform can adopt various forms such as cubes, cylinders, and polygons. The following cubes are used as an example, such as figure 1 As shown, the design method of the multifunctional calibration satellite is illustrated.

[0074] The platform digs holes on the ground and installs Lumber balls, which are responsible for providing accurate target characteristic benchmarks. In addition to the platform facing the ground, the rest of the surface is pasted with solar cells, which are responsible for charging the battery. The platform is equipped with GNSS receiver antennas, magnetometers, and sky measurement and control antennas on the sky. An antenna for ground measurement and control is installed at the connection betwee...

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Abstract

The invention provides a system for simultaneously conducting radar RCS calibration and exterior calibration based on an alignment calibration satellite. The invention changes a working mode wherein radar selects a RCS calibration satellite and an exterior calibration satellite respectively for RCS calibration and exterior measurement calibration. Based on technical features of the multifunctional calibration satellite, the radar can conduct RCS calibration and exterior measurement calibration at the same time, so that the efficiency of existing radar calibration is improved by double, and the economic consumption and the manpower support demand in the radar calibration process are halved.

Description

technical field [0001] The invention relates to the technical field of radar measurement, in particular to RCS calibration and system error calibration technology, which is a radar RCS calibration and external measurement calibration system based on calibration satellites. Background technique [0002] Ground high-power reflective pulse radar is an important backbone equipment in the fields of target detection and situational awareness, and has the advantages of long distance and all-weather. The information that the reflective pulse radar can obtain includes the distance (R) and angle (azimuth, elevation) of the target relative to the radar and other external position information, as well as the RCS (radar cross section) target scattering characteristic information. [0003] RCS characterizes the target’s ability to scatter electromagnetic waves irradiated by the radar. Target RCS measurement is a process of converting the echo power of the radar receiver using the radar eq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 孙刚郭军海赵华杨萍
Owner NO 63921 UNIT OF PLA
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