Will RTK be more accurate than PPK?

I am just trying to understand RTK process. I have used PPK in my hydrographic & topographic survey in the past. Will RTK be more accurate or more reliable than PPK? I do not need to know my position at once.

Will RTK give me more fix points than PPK given that they both have the same number of satellite reception?

How many satellites minimum is required to get a fix in RTK mode as compare to the 5-6 in PPK?

There are only a couple advantages I know of doing RTK rather than PPK.

• Instant results making realtime decisions in the field possible
• The time to get quality survey positions is reduced. (initialization or time to fix)

There are benefits of PPK as well

• No communication issues
• The possibility to eliminate single base line solutions by doing the PP to muliple reference stations.

A rule of thumb for me is that the same number of satts are required for either method.

RTK Instant sub centimetre for x and y and 1.4 cm for Z... Provided initial base station good coordinates.

Ideal for boundary work and many engineering applications.

While you say  you do not need to know position at once.  When you have this  it makes a huge difference to planning and locating.

RADU

Its the other way around, PPK is more accurate that RTK if you have a correct solution of the SV ambiguities with your PPK solution.  There are many other advantages of PPK, in that you can process data with different processing algorithims for a check, and difficult data can many times be saves by a variety of PPK techniques.  Believe me, I have a big bag of them from my days of PPK processing of aircraft trajectories, at long baselines.   If you don't need an answer in "real time" I wouild suggest staying with a PPK solution. 

Appreciate the replies .
I was under the impression that RTK would give more fixed results because you get another "vector" correction from base->rover is added into the equation. A client of mine was also saying that they need RTK equipments because it is more accurate in dense urban settings with lots of high rise buildings. I did not want to get into a discussion as to the accuracy of the RTK process but I have the general impression that even with RTK if you can't get clear signals then it won't give you a fix position too.

The single greatest advantage ,to me, for PPK is the distance one can rove from the base station. Obviously this requires an open view of a minimum number of SVs to keep the fixed solution. I have actually gotten good PPK results at ranges over 20 miles from the base station. Airborne GPS uses mostly PPK processing. With AGPS the PPK solution is further improved with IMU data.

Will RTK be more accurate or more reliable than PPK? I do not need to know my position at once.

No.

Will RTK give me more fix points than PPK given that they both have the same number of satellite reception?

Yes, depending on satelite geometry, multipath, etc.