Lecture 4 Flashcards
To make something stealthy
Is to lower the observability of an object
Van Allen belt
Most intense part is the inner @ 14REM/5MIN
RAD
Radxn absorbed dose
Roentgen equivalent mammal
REM
REM =
Q x RAD
A
Radiation weighting factor 1-20
1 = X-ray
10 = neutrons
REM used to measure effect of radxn on
Humans
How sonar works
Takes image of the ocean floor and periodically comes back to update the image and checks the delta.
Power of sonar mapping
Ability to check if object is out of place
How space collector detected
Visible track
IR as latent heat against deep space
Radar
Emissions
Orbit determination
Periodicity
Area of coverage
Field of view
Star map comparison looking for blacked out areas
General orbit type
Circular Elliptical Parabolic Hyperbolic CONE SHAPES Other than circular orbits
DTX of low observables and countermeasures
Object has physical properties
Low observable tech reduces the detection probability of those properties.
Countermeasures focus on a systemic array of techs and methods and constantly evolve along with the threat.
Inner belt radiation effects on NANO
No observable degradation up to 136 years of exposure.
Opens door to high efficiency ion propulsion for orbit raising of satellites.
Inner belt radiation effects on HUMANS
Illness 30min
Death in 6hrs
