"Stealth" with anything in space is more about methodology than technology.
that said, one of the non-canon things I'm playing with in the "Administrator" stories, is stealth tech. (and the various ways to defeat it.)
the basic explanation I came up with, is that space is big. space is really big, you might think it's a long way from your house to the local drug-store, bt that's peanuts to space.
The BEST detection grids are going to be arrayed facing three things, because space is so big:
1. Nearer repeating temporary points-the lagrange points in your main planetary orbit or the stable lagrange points for the larger bodies in a given system-these can be monitored by satellites without needing more sensor operators than your typical planet has people.
2. the Zenith/Nadir points in the system. Because everyone has those on their charts/programmed into their jump computer and it's generally smart to have your main ports of entry under some kind of surveillance.
3. Near-orbit for an inhabited planet. 'near orbit' means out to about Luna's orbit. this can be practically monitored and reacted to without lightspeed delay.
Those three are your practical maximums, as in Sol system level coverage, and there will be holes in that coverage.
Why? because space is big. it's really, really big. it's also three dimensional and full of big, massive, moving objects that exert their own gravitation and because of that, create points and periods of gravitational equilibrium that are moving through the system at ranges where your detection will be too late.
if it happens at all.
Methodology for stealth:
1. Traffic. The Bug-Eye's big 'stealth' method was to imitate a commercial dropship on an established commercial route. All the advanced tech in the Bug Eye were about being too small to be a jumpship, therefore having to be a dropship, thus local, thus not a foreign surveillance device. This is the "Hiding in plain sight" method.
2. Come in from an angle with less surveillance. This is what a Scout class jumpship is all about. Arrive at a temporary point that's semi repeatable/predictable, and release your dropship payload on a ballistic course, relying on the fact that space is big and the drive plume is short-duration or small, to get your stealthy package into position.
3. Reduced signature: Teh Bug-eye and the Scout both rely on small jump signatures, because they're statistically less likely to show up, esp. if you're dealing with a system that gets a lot of traffic. (either merchant or military).
4. Radio Silence. If you're not broadcasting and you're keeping burns short, faced away from likely surveillance, or masked behind objects, you're pretty hard to track.
all of these rely in one way or another on ballistic trajectories or coasting to avoid that big-ass lance of fusing hydrogen that is a typical engine burn for thrust.
most also rely on traffic which ARE doing a lot of thrusting around the system.
Now, Technological stealth measures?
1. ECM/ECCM this ties back to the 'hiding in plain sight' thing. You're looking like something else that isn't worth looking at.
2. Stealth/Low observable tech: nonreflective coatings, absorbing materials for the typical bands used for detection, a black 'absorbing' jumpsail instead of the highly reflective silver-or-gold style, if you run 'cold' with your engine you can imitate a rock or even a hole in space...until you have to fire your fusion manuever drive. At that point, you become REALLY OBVIOUS-but only if the detectors are looking your way. ways to mask this include exploiting space in the target system-like drifting and cold-thrusters to orient your drive so the system's sun (or suns) is at your back. Sensitive systems will be blinded by the big ball of fusion behind you, and you can accelerate. (Notably, you're probably doing this off a slingshot orbit from deep in the outer system.)