Interference Test System Between Millimeter Wave Radar and Radio Astronomy

Abstract

The invention provides an interference test system between millimeter wave radar and radio astronomy. Wherein, the interference test system includes: an electromagnetic shielding room; a horn antenna matching the frequency band of the millimeter-wave radar to be tested is arranged in the electromagnetic shielding room, and the horn antenna is directly opposite to the millimeter-wave radar and the distance is less than a predetermined value; a radar simulator, It is arranged in the electromagnetic shielding room, and the signal input terminal of the radar simulator is connected with the horn antenna for simulating the electromagnetic environment and the current test distance in the current test environment; the high-precision spectrum analyzer is arranged in the electromagnetic shielding room, The signal input end of the high-precision spectrum analyzer is connected to the signal output end of the radar simulator for simulating radio astronomy, and outputs the signal strength input from the signal input end of the high-precision spectrum analyzer to the high-precision spectrum analyzer . Through the present invention, the complexity and error-proneness of result acquisition are reduced, and a large amount of manpower and material resources are avoided in the actual field test.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation applications, in particular to an interference test system between millimeter wave radar and radio astronomy. Background technique [0002] Advanced Driver Assistant Systems (ADAS, Advanced Driver Assistant Systems) use various sensors installed on the car to continuously perceive the surrounding environment, collect data, and identify, detect, and track static and dynamic objects while the car is driving. Combined with the map data of the navigator, the system is calculated and analyzed, so that the driver can be aware of possible dangers in advance, and the comfort and safety of driving can be effectively increased. The sensors used in ADAS mainly include cameras, radars, lasers, and ultrasonic waves, which can detect light, heat, pressure, or other variables used to monitor the state of the car. They are usually located at the front, rear, side, corners, bottom, and top of th...

AI Technical Summary

Problems solved by technology

[0009] The current theoretical calculation method mainly has three shortcomings: First, the millimeter-wave radar radio frequency parameters in the theoretical calculation parameters are only the radar setting parameters, but in actual situations, the emission index often deviates from the setting parameters, which will easily cause the final calculation. The deviation of the results; second, the actual environment of the radio astronomy observatory is very complex (including mountains, plains, forests, buildings, weather and climate, etc.), the establishment of mathematical models can only be aimed at the more typical ideal situations, and cannot cover most complex environment; third, theoretical calculations require the use of various models for complex calculations, the analysis is complex and cumbersome, the amount of calculation is large, and the calculation results are prone to errors

[0010] The existing actual field tests mainly have three shortcomings: First, the actual test is carried out without determining the interference between millimeter-wave radar and radio astronomy, which is likely to cause business interference to radio astronomy, which is very dangerous and not allowed Second, the actual environment has a very high noise floor, the environment is harsh, and the signal is prone to attenuation. The test results themselves will be affected by factors such as weather uncertainty and unknown radio interference; third, the actual test generally requires a large number of tests, covering Various environments, which result in a very large workload and require huge manpower and material resources

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