Range zero value calibration device for measurement and control system

Abstract

The invention discloses a range zero value calibration device for a measurement and control system. The calibration device comprises a calibration antenna (1), a duplexer (2), a local oscillator (3) and a frequency converter (4), wherein the calibration antenna (1) is provided with a bidirectional port which is connected with the bidirectional port of the duplexer (2); the radio frequency output port of the duplexer (2) is connected with the radio frequency input port of the frequency converter (4); the radio frequency input port of the duplexer (2) is connected with the radio frequency output port of the frequency converter (4); and the local oscillator input port of the frequency converter (4) is connected with the local oscillator output port of the local oscillator (3). The device is simple, has high calibration precision, is easy to operate, can replace the traditional tower range zero value calibration device in the measurement and control system, is especially suitable for being applied to occasions without the capability of building a calibration tower, and can be used for a ground application system with the function of measuring the distance.

Description

technical field [0001] The invention relates to a system distance zero value calibration device in the field of aerospace measurement and control, and is particularly suitable for distance measurement devices in ground application systems. Background technique [0002] In the ground application system of the aerospace measurement and control system, in order to obtain an accurate distance zero value, a calibration tower is generally built, and the transmission device on the tower is used to close the loop of the ground transceiver system. [0003] However, the construction of the calibration tower increases the project cost. Since the far-field distance that satisfies the calibration conditions will be more than 100 kilometers, the height of the calibration tower is too high and the equipment on the tower works in an outdoor environment, and the reliability of the equipment will decrease. In the deep space large antenna system, it cannot be realized, which also requires the ...

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Problems solved by technology

[0003] However, the construction of the calibration tower increases the project cost. Since the far-field distance that meets the calibration conditions will be more than 100 kilometers, the height of the calibration tower is too high and the equipment on the tower works in an outdoor environment, and the reliability of the equipment will decrease.

In the deep space large antenna system, it cannot be realized, which also requires the system design to explore a new method of distance zero value calibration

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