Doppler signal sensitivity detection device

Abstract

The invention discloses a Doppler signal sensitivity detection device. A projectile body component and an active reflecting plate component at front and back are installed on a base, the projectile body component comprises a process projectile body and a fuze installed in the process projectile body, and a wave transmission plate conformal with a projectile wall is installed on an outer wall of the process projectile body corresponding to the fuze; the active reflecting plate component comprises a telescopic component and an active reflecting plate installed on the telescopic component, the active reflecting plate is arranged to be parallel with the wave transmission plate and has the same height as the wave transmission plate, and the telescopic component is fixed on the base in a back and forth movement manner; the fuze monitors an output Doppler signal and a detonation control signal through an external power supply and an external oscilloscope, and the active reflecting plate usesa standard signal source to apply a Doppler signal to both ends of a mixing diode; the active reflecting plate is translated from far to near to observe whether the detonation control signal is generated on the oscilloscope; and when the signal is generated, the horizontal distance between the wave transmission plate and the active reflecting plate at the moment is recorded, which is the sensitivity of the Doppler signal.

Description

technical field [0001] The invention belongs to the technical field of target analog detection, in particular to a Doppler signal sensitivity detection device. Background technique [0002] At present, the commonly used Doppler sensitivity test methods are mainly divided into passive test method and active push plate test method. [0003] The passive test method mainly uses keychains and other simulated Doppler target information. This method contains the target Doppler frequency, but the Doppler frequency is more complex, which is somewhat different from the actual target. It is generally used for functional tests, and can also be used for qualitative sensitivity tests, but the results of sensitivity tests are related to factors such as the relative position of the target and the fuze, and there are many influencing factors, which are difficult to control. [0004] The active test method uses active signals to simulate the rendezvous process when the target is approaching,...

AI Technical Summary

Problems solved by technology

[0008] (1) There is no mature measurement method reference for the process of sensitivity test before, and there are great difficulties in how to install the product and perform specific test operations;

[0009] (2) In the previous test, the active reflector was manually moved to simulate the test distance. There was no positioning device, and the movement direction and position (distance) were scattered widely, making it impossible to achieve accurate measurement;

[0010] (3) During the test, the tester performs the test operation according to past experience, which makes it difficult to guarantee the consistency of Doppler sensitivity and is not suitable for mass production;

[0011] (4) The mechanical strength of the antenna and external cables is limited, so it is not allowed to pull and yank the product strongly during operation to prevent the large displacement of the test cable from generating clutter and affecting the test results of Doppler signal sensitivity

Images