I would like to have this project use the radar equation to determine
brightness and possible blooming on targets. 

I want the radar equation to be implemented within the shaders.

I want a postgres database (I did install postgresql and set up a database named radar with
a postgresql user named radar with password radar with full priveleges to database radar.

DATABASE Schema:

1. Type of target (Enumeration AIS, ADS-B, Local (simulator)
2. ID a. MMSI for marine; b. ICAO 32 bit aircraft address; for simulator we can use the same MMSI
   and aircraft address
3. width (32 bits) in meters (float data type)
4. length (32 bits) in meters (float data type)
5. Height above water (32 bits) in meters (float data type)
6. Material (Enumeration fiberglass, wood, aluminum, steel
7. boolean: need update for size and material, does not need update for size and material
8. ISO 8601 timestamp for last used
9. ISO 8601 timestamp for last updated
10. Track / position history (to be used if I want newer track prediction radars

For performance, we can keep id, width, length, and height, and material
inside the shaders as fixed data; but have location, heading, and altitude (aircraft)

The items that are updated per data coming in from the raspberry pis and the simulator
are orientation / RCS (based on heading),  location (in longitude and latitude) and ID ; Suggestion
vertex objects or SSBO

Suggest that CPU compute the RCS based on heading and dimensions and altitude (aircraft) 
In doing this, keep this work outside of any mutex lock of any shared data

Maybe,  if I simulate a modern system, I may want a field to describe the target (passenger, cargo,
oil, fishing; and maybe specifics for the targets. I know that the coast guard has a lot of
contextual data on targets that are from external sources. For now, let's not worry about this.

PROPOSAL:

Since ADS-b and AIS may not have material and size data, I would like to propose
That the initial running of the system upon detecting a target that has no size
determination, we use a default size, say, 20 feet long 20 feet wide and fiberglass
for boats; 50 feet long 10 feet wide fusalage for planes; and set the need update parameter
to need update.

Add an option (command line option) for system. Command line options would be 'database'
which would open a graphical panel suitable for updating the postgres database.
At the beginning of the life of this project, almost all targets seen except for those
from the simulator will need database updating; as life of the system gets older there would
be fewer targets that need operation. For this option; none of the main radar screens
will be available. So we do not have to to have the opengl and shader stuff. Use a regular
desktop based application non opengl shader database updating application. This would be ended with quit
and then the main radar application can be started.

END OF PROPOSAL

Marine radar equation stuff:

For this purpose, the marine radar will use the X Band (9225 MHZ) and 30 KW power for
maritime traffic system radar (our a-scope marine and PPI scope marine)

For Marine, horizontal beam width is 0.5 degrees; vertical beam width is 20 degrees. 
For Marine, the antenna size is 15 feet in length.
For Marine, the antenna height is 50 feet off surface

Air traffic radar equation stuff:
 
For this purpose, the air traffic control radar at BLI frequency 3 ghz or S Band; 
power 25 KW

For Air Traffic Control, the beam width is 1.4 degrees for horizontal and 5 degrees for vertical
For Air Traffic Control, the antenna size is 20 feet wide
For Air Traffic Control, the antenna is on a tower 50 feet high from the runway. It is not
mounted on the control tower.

Chain Home radar equation stuff:

For Chain Home, this will be a bit different: (this is AMES type 1)

Frequency is 30 MHZ
Power is 500 KW
Pulse width is 20 US

TRANSMIT GAIN (Gt)
Note that the transmit beam is not a beam, but a floodlight.
Pulse repetition frequency is 25 Hz or 12.5 Hz as selected by operator
Use Transmit G from beam width (floodlight) something like
G = 30000/100 degrees * 40 degrees
about 8.7 dBi (linear value of 7.5)

Note that this is Bistatic; we need both Gt and Gr

RECEIVE GAIN (Gr) is about 4 to 10 (6–10 dBi)

System loss due to transmission line about 8 DB

Target RCS larger RCS due to resonant scattering (I need help; please lookup

Precision Approach Radar Equation Stuff:

Peak power is about 100 kw
Very high antenna gain
X Band (3 cm for wavelength) Operation allow higher antenna gain 
PAR must reliably detect small aircraft
High pulse repetition rate
Sweep about 20 degrees horizontal and 10 degrees vertical
Short pulse width for range resolution
Beamwidth is determined by wavelength/antenna size with antenna size of about 5 meters.

GENERAL NOTE FOR EQUATION STUFF

We will need these key variables to be able to be changed via the settings.h file 
and DESIGN.md and CLAUDE.md