A radiometer ground detection system and method

Abstract

The invention discloses a radiometer ground detection system and method. The system is used for testing an on-satellite receiver unit and an on-satellite digital control unit on the ground. The systemincludes a temperature measurement data input module (5), an analog temperature measurement data output module (6), an output module (7) of each channel voltage of an analog receiver and a data processing module (8). The temperature measurement data input module (5) is used for reading temperature measurement data output by the on-satellite receiver unit; the analog temperature measurement data output module (6) is used for simulating a temperature measurement circuit to output periodic data to the on-satellite digital control unit; and the output module (7) of each channel voltage of the analog receiver is used for simulating functions of the analog receiver to output cold air, over-the-ground and observation level signals of each channel for the on-satellite digital control unit to perform collection and testing. The data processing module (8) is used for receiving a data packet sent by the on-satellite digital control unit, and sending the data packet to an upper computer. The system has the advantages of being small in size, multiple in functions and high in universality.

Description

technical field [0001] The invention relates to microwave radiometer ground detection equipment, in particular to a radiometer ground detection test system and method. Background technique [0002] As a commonly used payload for earth observation, microwave radiometers are often carried on different satellite platforms. In order to enhance the reliability of spaceborne equipment, the testing process in the development stage is very important. Whether the test is sufficient or not depends on whether the function of the ground detection equipment is perfect. Therefore, the ground detector equipment is one of the important components of the microwave radiometer payload, which provides important assistance for the development and testing of the entire subsystem, thus ensuring the development progress and reliability of the microwave radiometer payload. [0003] Microwave radiometer ground detection equipment has been developed before, but its functions are relatively single. Ge...

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Problems solved by technology

[0003] Microwave radiometer ground detection equipment has been developed before, but the function is relatively simple. Generally, it can only collect telemetry parameters, receive and send data packets, and cannot simulate the output data of the receiver unit and temperature measurement unit.

In stand-alone testing, all the stand-alone machines are generally connected together, and the numerical control unit can only read real data from the receiver unit and temperature measurement unit. If other stand-alone machines are not developed, it will greatly affect the test progress of the numerical control unit.

If there is a problem with the interface between the stand-alone machines, it can only be found during the joint test of the subsystems, and it is not easy to locate, which greatly delays the development progress of the entire subsystem. Therefore, a ground inspection device with full-function testing is particularly important. important

[0004] In addition, the data rate of the microwave radiometer is generally not high, and it takes a few seconds to output a set of data. The previous ground inspection equipment bundled the telemetry parameters with the scientific data package and packaged the output, which caused the telemetry parameters to be refreshed in a few seconds. Once, the real-time performance is too poor, and if there is a problem with the scientific data and the ground detection equipment does not receive it, the telemetry parameters will not be able to be downloaded, and the practical security is not high

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