No, you were trying to mislead and misdirect the reader by going on a tangent and bringing up communications satellites when I was originally talking about an ASAT attack on 31 GPS satellites. One thing has nothing to do with the other.
lol....
First of all, Do you actually know how JDAM guide to their target.
First of all, GPS only "Aided" the JDAM guidance system,
GPS DOES NOT GUIDE JDAM itself. In fact, even in the Earliest JDAM (the 1990s one) JDAM was designed to work
WITHOUT the GPS signal, be it either lost or jammed, GPS DOES NOT GUIDE JDAM, INS DOES.
With GPS the CEP for JDAM are within 5 meter, without, the CEP range from 20 meters to 30 meters depend on free fall range
the JDAM system will provide a minimum weapon accuracy CEP of five meters or less when a GPS signal is available. If the GPS signal is jammed or lost, the JDAM can still achieve a 30 meter CEP or less for free flight times up to 100 seconds
Joint Direct Attack Munition - Wikipedia, the free encyclopedia
How JDAM work? JDAM work by INS Guidance, like you would have with any aircraft today. Instead of a powered flight, the controller is a unpowered glide. GPS in itself
DO NOT guide the bomb to its target, instead GPS signal were used to calculate the flight path and put it into the solution, provide the current position of the aircraft in related to the bomb, then INS will calculate a solution of flight path. As stated before, if GPS signal is loss (
IE YOU DESTORYED OUR 31 NAVSTAR SIGNAL) then you expect the bomb to drop in a range of 30 meters AT MOST within the target, with GPS, you expect the bomb drop
WITHIN 5 meters.
this summed this up very nicely
The navigation system is initialized by transfer alignment from the aircraft that provides position and velocity vectors from the aircraft systems. Once released from the aircraft, the JDAM autonomously navigates to the designated target coordinates. Target coordinates can be loaded into the aircraft before takeoff, manually altered by the aircrew in flight prior to weapon release, or entered by a datalink from onboard targeting equipment, such as the LITENING II or "Sniper" targeting pods.
Joint Direct Attack Munition - Wikipedia, the free encyclopedia
GPS- Provide coordinate
INS - Provide the flight solution
Without the GPS signal, your bomb will not get updated information after leaving the aircraft. It will still be able to obtain a flight solution with INS. Without INS, your bomb become
Inert Bomb.
It's the same as with any GPS system you use, with GPS, you will only get a constant stream of "YOUR POSITION" however, if you want to calculate the direction to your destination, you need some kind of Navigation program. It maybe installed in your GPS unit, it maybe not. One very good example is when you use google map (or any kind of mapping apps) on your Iphone or Samsung, you can get your location in a map, but it not will show you the routes of where you want to go. However, if you use Navfree or program like this, you can calculate your route with your GPS, starting from where you are, However, if a GPS signal is not available, you can still get a solution for direction from A to B.
You simply confused the guidance system and the GPS function with INS
Inertial navigation system - Wikipedia, the free encyclopedia
umm, no, without GPS, they will only slightly off target and not so accurate. INS guide those weapon, not GPS.
Fair enough.
Yes you do. JDAM is a GPS/INS guided bomb by design. Adding a laser seeker to it doesn't change that fact.
Let's put it like this.
If you lose GPS, JDAM loses several things.
1. You lose the JDAM's all-weather capability.
2. You lose the JDAM's GPS-guided fire-and-forget capability because you now need a targeting pod to designate the target with a laser.
3. JDAM-ER will lose its 40 mile+ stand-off capability.
1.) No, bomb will still drop, without sophicated accuracy
2.) No, actually, without GPS, your bomb actually become "FIRE AND FORGET" with GPS, the JDAM will become fire and NOT forget.
Again
If the GPS signal is jammed or lost, the JDAM can still achieve a 30 meter CEP or less for free flight times up to 100 seconds
Joint Direct Attack Munition - Wikipedia, the free encyclopedia
3.) No, the stand off range will still be in place, it just not as accurate with GPS signal