Target decoy interference effect evaluation method for low slow small unmanned aerial vehicle

Abstract

The invention relates to the technical field of unmanned aerial vehicles, in particular to a target decoy interference effect evaluation method for a low slow small unmanned aerial vehicle which is used for evaluating the decoy interference effect of navigation decoy equipment of the low slow small unmanned aerial vehicle. The navigation decoy equipment emits decoy trajectory data according to a real GNSS signal of the low slow small unmanned aerial vehicle to induce the low slow small unmanned aerial vehicle to position, and the evaluation comprises the following steps: setting a decoy trajectory of the low slow small unmanned aerial vehicle, and acquiring real-time dynamic data of a moving trajectory of the low slow small unmanned aerial vehicle in an experiment field by using a measurement robot; and comparing the real-time dynamic data of the moving trajectory of the low slow small unmanned aerial vehicle with a set decoy trajectory, and evaluating the decoy interference effect of the navigation decoy equipment through a comparison result. According to the invention, automatic tracking and high-precision measurement are carried out on the dynamic unmanned aerial vehicle target by using the measurement robot through a non-satellite positioning means to realize decoy interference effect evaluation, and the method is suitable for evaluation test of different decoy interference scenes and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to a method for evaluating the decoy interference effect of a low-slow small unmanned aerial vehicle. Background technique [0002] Low-slow small unmanned aerial vehicle refers to an aircraft with a flying altitude below 1000 meters (low altitude), a flying speed of less than 200km / s (slow speed), and a reflection area of ​​less than 2 square meters (small). With the advancement of technology, low-slow and small unmanned aerial vehicles have played an increasingly important role in military applications, aerial photography and mapping, emergency rescue and disaster relief, power inspections, agricultural plant protection, etc. However, low-slow and small unmanned aerial vehicles also have many hazards And hidden dangers: low-speed and small unmanned aerial vehicles are usually difficult to detect, find and track. At the same time, they are low-cost and easy to beco...

AI Technical Summary

Problems solved by technology

[0003] In the existing evaluation of the effect of spoofing jamming on low-slow small unmanned aerial vehicles, by loading a small multi-system or GNSS receiver of other systems different from the spoofed target's own positioning system on the spoofed target, and then, through spoofing the jamming equipment to the spoofed target itself At this time, the positioning result of the multi-system GNSS receiver is still correct, which can be used as a standard to evaluate whether the deceived target is successfully deceived according to the predetermined decoy trajectory and how accurate the deception is; however, in fact, the positioning system of the unmanned flying target itself There are requirements, that is, the positioning system of the comparison standard receiver cannot be the same, and at the same time, the spoofing jamming equipment cannot broadcast the whole system interference signal at the same time, otherwise the receiver used as the comparison standard will also be deceived and cannot provide accurate and credible positioning results

In addition, the frequencies used by the main navigation systems overlap to a certain extent. When decoy interference is applied to one of the frequencies, it may have a certain impact on the positioning results of other systems, which may reduce the accuracy level of the comparison standard itself.

There are also ground-based radars used to independently locate the deceived target, and use the positioning result as a standard to evaluate whether the deceived target has been successfully deceived according to the predetermined decoy trajectory and how accurate the deception is; however, to achieve high-precision radar positioning, there is a need for technical parameters of the radar itself. High requirements, its cost is usually high, and it is difficult to obtain for ordinary civilians, thus limiting the application field

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