Low-orbit and pseudosatellites.

 Low-orbit and pseudosatellites. 

The low-orbit satellites are interesting tools. Those satellites can actually fly in the high atmosphere.  They can use the active engine tool to stay in orbit. There is a possibility that those satellites will dive into the deeper atmosphere. Before they start their engines, which can be regular rockets, air-breathing electric ramjets, Scramjets, or some kind of ion thrusters.  The purpose of those maneuvers is to give the low-flying space system more speed. And that makes this system use a so-called jumping trajectory, where the space system makes a series of ballistic jumps. 

Atmospheric satellites can take the same missions that high-flying aircraft can do. The difference between an airmospheric satellite and the SR-71 “Blackbird” is their size. When we think of altitude, where the SR-71 flies, we can call that legendary aircraft a sub-orbital spacecraft. 

It’s possible that the regular aerodynamically shaped satellites can replace that aircraft. The atmospheric satellite is easier to launch into its trajectory than the SR-71, because those systems can use regular rocket boosters as carriers. 

The atmospheric satellite can be a space shuttle-looking thing, or it can be a high-flying mylar airship. The cold ion technology can make this system invisible to radars. In some visions, the low-flying satellites or miniature shuttles can create the ion layer. In their trajectory. That can cause trouble for radars. 

By letting gas flow through air tubes. And ionizing that gas in these tubes. That can form the layer behind them. And that makes it hard to detect missiles and other satellites behind that ion mask. The air-breathing ion engine can also be used to create plasma in the high atmosphere. 

It’s possible that high-flying drone satellites can use a Radioisotope thermoelectric generator,

RTG generators to get their energy. Those systems can give those atmospheric satellites unlimited flight time. There are tested things. Like high-flying solar-powered drones that use electric engines. Those drones can fly over 30 km in altitude. They are easier to handle than RTG. Things like laser beams can deliver energy to their solar panels in areas where there is no sunlight.  

And in cases where atmospheric satellites crash. There are no radioactive materials. Those systems can observe Earth, look for weather, and changes in the environment. They can offer observation and communication tools for civil and military use. 

The airship or balloon. That hangs over one point of Earth mimics a stationary satellite. It is sometimes called a pseudosatellite. That's high-flying. Maybe a little bit saucer-shaped airship drone, or blimp. Can observe areas under them. They can observe and coordinate crews on the ground. It can carry laser and radio communication tools. And that system can use radars to observe objects below it. Those atmospheric satellites can also collect samples from the air.