>I have no idea what you mean. If you could spoon feed me a little more so I can look into this, I would be grateful.
It's a tool that measures orientation and angular velocity. Long story short it's the thing inside your plane or tank cannon or missile that allows it to aim/maintain track of where it's at, at all times. More importantly higher-spec/more accurate (typically fiberoptic) gyroscopes allow you to use angular velocity with a little integration (the kind that can be done at the hardware electrical level, not even requiring software/smart electronics or even electronics at all if you're willing to sacrifice some precision) to measure exactly where you are (allegedly) in the air. Your phone even has one if you can rotate the screen, albeit a pretty shitty one. Basically it's the thing that allows you to navigate even if GPS and all other forms of communication are down, and typically it's the device used to self-correct in conjunction with GPS or whatever communicative system it happens to use. In things like missiles they're roughly 10% of the cost (the ones in a $115,000 50kg air-to-ground missile cost between $10,000-$30,000) since you don't want your missile to hit the wrong target if the enemy is using any sort of jamming technology (also because conventional navigational communications are impractical at those speeds).
>I have heard of jammers making drones fall out the sky but I don't know enough to say that it is result of 'specialized jammers' or less sophisticated drones.
do that unless it's either a crappy consumer-grade drone that's designed to just auto-land when it loses signal (since generally the goal of consumer-grade drones is to preserve them if signal is lost). If they just fall out of the sky, that's either shitty computing that shuts the drone off when it loses signal or an electrical subsystem attack (basically an EMP).
>Again, I am new to the subject so I don't know what benefit one would gain at operating at low attitudes expect maybe avoiding radar.
Wind-speeds at operating heights of "helicopter" style drones are typically much, much faster than wind-speeds on the ground. Fixed-wing drones have a very hard time dealing with those windspeeds without either severe loss of functionality or beefy (price-wise) upgrades that make them far too expensive to use at any height except ultra-high altitudes using ultralight designs. The main benefit of a fixed-wing drone is that because there's fewer moving parts and they rely on wind pressure/air currents to stay afloat, they tend to be very, very stabilized compared to a heli-drone. This makes them capable of acting as a fixed point to detect abnormal movement in a sea of movement (such as out over choppy waters where they're good for spotting submarines below the water's surface by interpreting differences in surface waves, or in crowded cities when looking for subtle signs of vehicles/firearms being used), but being fixed structures, they are less maneuverable when it comes to evading direct fire, much less so than an actual helicopter or fixed-wing plane. They can be useful at low altitudes if used en-masse, but doing so is expensive compared to using helicopter-style drones that might be heavier but are significantly cheaper due to not needing specialized parts to maintain navigation, altitude, or maneuverability. The only flip-side of this, is that fixed-wing drones typically require far less experience on the operator's part to operate successfully.
>And I don't know the downsides of operating high attitude.
Electronics need extra shielding at high altitudes from background radiation, and many materials act weird when at high altitudes. Additionally you need more sensitive gyroscopes, and if you're throwing all these expensive parts in you want to logically protect your assets which requires additional investment. I was more pointing out that because of wind speeds at mid-altitude requiring a beefier product and these more sensitive electronics needing extra shielding making them more expensive, typically it's preferable to just go with the helicopter models if moving out of rifle range unless dealing with ultra-high altitude drones meant strictly for surveillance or air-to-sea drones (which are also mainly used for surveillance).