How will UAVs leave GPS receivers in flight?
Unmanned aerial vehicles (UAVs) seem so tempting that if a task is difficult or dangerous for people, they can be accomplished without people. Today, anyone willing is able to develop UAVs. The number of UAVs that have been developed and are being designed is huge. All designers want their UAVs to fly into the blue sky as soon as possible, but they ignore the question: Who needs UAVs?
How will the UAV go away from the GPS receiver?
Developers of UAVs recommend UAVs to various fields: in peacetime, they can monitor pipelines in the tundra, search for forest fires, search for fish flocks, etc. in wartime, they can perform reconnaissance, low-altitude bombing, and launch air-to-ground missiles to dangerous targets (such as caves). But no one would have thought that these tasks might not be completed due to the following reasons in wartime.
With the inertial navigation system based on gyroscope, UAV can not get enough precise coordinate data. Therefore, the combination of GPS satellite navigation system and inertial navigation system is adopted in the flight control of UAVs in various countries. When UAVs take photographic reconnaissance of stationary tanks, they must obtain the geographic coordinates of the target, which can only be achieved with the help of GPS system (in the future, with the help of "Glonas" or "Galileo" satellite navigation system).
Unmanned aerial vehicles need to know their precise location when they take photos, so they have GPS signal receiver installed on them. The GPS signal receiver can not only continuously measure the current coordinates of the UAV, but also start the UAV on time to correct the inertial navigation system. UAV still needs to know its geographical coordinates when it returns to base. Precise bombing and launching of air-to-ground missiles by UAVs also need to accurately determine their current position relative to the target, while the inertial navigation system can not provide the required precision positioning data.
Now the question is: What will happen if the UAV-borne GPS receiver or other similar devices fail because of the enemy's electronic interference? There is only one answer: the GPS receiver will lose its positioning function, and the UAV or UAV will become a pile of scrap iron.
At the Moscow Air Show held in 1997, a Russian company demonstrated the first electronic jamming launcher for GPS and Glonas satellite navigation signals, which can destroy the work of satellite navigation signal receivers and thus deprive them of positioning function.
Once the device was launched, it caused a sensation in the West. Americans first realized that this new product posed a serious threat to its technology weapons. The Pentagon has purchased dozens of such jamming devices and tested their GPS-based technical weapons. The test results show that the precision guided weapons (cruise missiles, JDAM precision guided bombs, etc.) of the United States and other NATO countries are significantly reduced in the case of interference.
Therefore, an important conclusion can be drawn: a country can effectively confront the enemy's precise guided weapons by establishing a dense electromagnetic interference field over its entire territory with the aid of such jamming devices. In this case, the precision guided weapon will not be able to correct its flight trajectory with the help of GPS system, and will eventually deviate from the intended target.
After the United States, some other countries also bought this kind of jamming device. The device was tested in the war of Iraq in the spring of 2003. In the early days of the war, American precision guided weapons frequently deflected, and some important targets in Iraq were not destroyed. On the fifth day after the war, the United States accused Russia of providing GPS jammers to Iraq. Over the next five days, the U.S. military carried out carpet bombing of the jammer-equipped area, and the war continued as planned after all the jammers had been cleared.
This fact shows the world that the effectiveness of various technical weapons using satellite navigation systems can be reduced to nothing by means of cheap equipment.
Several countries have equipped their armies with similar jamming devices (but not Russian products), and more and more companies are producing such jamming devices, which are spreading at a rate comparable to that of Kalashnikov automatic rifles. It can be predicted that in the near future, GPS jamming devices will become as common equipment in the hands of guerrillas and terrorists as AK rifles.
The spread of GPS jamming devices has angered Americans because their non-nuclear strategic doctrine based on precision-guided weapons collapsed in front of jamming devices, and the United States has spent hundreds of billions of dollars to develop precision-guided weapons.
Therefore, the only way to deal with low altitude small UAVs is to use jamming devices. In addition to the failure of precision guided weapons and the destruction of military command, the establishment of electronic jamming field of GPS signal will also produce a side effect - the failure of UAV. Without accurate terrain continuity, the information obtained by means of cameras and cameras will be of no value.
In addition, the UAV does not have its own coordinates, and probably will not be able to return to base and crash. A large number of experiments show that if the area to be reconnaissance by UAV is jungle terrain, it will be impossible to find targets in the forest. Even in winter when leaves fall, large animals such as moose are hard to find from slow-flying helicopters if they do not move. The drone ads in western countries are like forests and forests in Iraq and Afghanistan.