The release notes that came with version 2.4 list as a new feature something called "Continuous Kinematic Mode".

The Manual on the CD doesn't say a word about this method, and I'm wondering, is this something not supported with my kinematic kit, which is 1 year old?

I assume this means you walk down the centerline of a road and the processor picks off a coordinate every so often. This would be a great feature, if only it wasnt such a mystery.

Does anybody know what this is?


I use stop n go kinematic all the time, and for this method you have to stop. Is continuous kinematic different?

Modified By Nearly Normal PLS on 8/20/2001 at 12:26 AM

Nearly,

Goto this thread "Re: Data Recording Interval - Why the same ?????" and read starting at Shawn's post 8/14/2001 at 10:14 am. Continue thru Brian's post.

Not detailed but gives a pretty good picture..........

Jimbo

The big question is "what is a new controller, and is mine old?"

It seems nobody knows much about this, so I will do a test tomorrow, see what happens.

Im a little disappointed in the manual, that not one word, except for a misdirected index reference to page 68, mentions this topic.

A "new controller" is Survey Control II running on a CE device.

Re: Nearly Normal's Question:

Continuous Kinematic, OTF (On-the-Fly) surveying refers to a field procedure for collecting data. It's a Post-processed technique.

Typically OTF requires (2) receivers, one receiver designated as the Base station, the other receiver designated as the rover.
The Rover collects data in kinematic mode, most specifically the Rover is in constant motion. The Rover collects data along a Trajectory. Stop & GO style surveys can be co-mingled with this technique. With OTF/Kinematic surveys one might not input a series of point numbers during field collection, like we do with Stop & Go, or Static observations.

This type of data collection can be used in Airborne GPS / Photogrametric surveys, where the Rover receiver is connected to the airplane's photo camera. The OTF Rover is post-processed against the Base to determine the path of the aircraft.

OTF / Kinematic can also used on the ground to collect ground based Trajectories, (Road Centerline & Profile, Rail-Road Track profiles, etc. It can be used to survey in a series of points that are very close together, typicaly these points can be walked
between or driven too very quickly, i.e. photo targets, or premarks. The OTF / Kinematic points require good visibility to the SV's. The route between points also requires good SV visibility. The idea is to mantain SV lock to atleast (5) SV's at all times.

Receiver sampling rates for OTF/Kinematic surveys are typically
(5) seconds, (1) second, or faster, depending upon the speed at which the Rover receiver travels.

The OTF/Kinematic surveys can be collected with Single Frequency or Dual-Frequency receivers. Depending upon which type of receivers are used dictates they associated field procedures for initialization.

Locus (L1) uses a Kinematic Initialization Bar, or occupying a known point for a brief period of time, then go mobile. If L1 receivers loose lock on less than (5) SV's, they must re-initialize, before continuing. (so the Post-processing S/w can recover from loss of lock).

L1/L2 Dual frequency receivers typically initialize the survey by
occupying a known station briefly, then go mobile. If Dual Freq
units loose lock on less than (5) SV's, it's not so critical, the receiver and post-processing can recover & re-fix the Integer Ambiguities. Dual-Frequency OTF/Kinematic surveys are more common.

Ashtech's new Survey Control II Device (CompaQ IPAQ) supports collection of OTF / Kinematic data. The IPAQ is compatible with Locus via Infra-Red connection, it's also compatible with the Z-Surveyor, Z-FX & Z-Xtreme receivers via a cable connection.

The newer versions of Ashtech Solutions now support processing of continuous kinematic data.

Bob LeMoine
Thales Navigation
Ashtech Precision Products

OTF is an initialization method, and may be post-processed or RTK.

"Continuous kinematic" as currently implemented in Solutions 2.x is ground trajectories; following a feature (stream, road, curb, etc.) and continuously logging positions at the selected interval. As currently implemented in Solutions, it is not suitable for airborne photogrammetric usage.
Modified By Brian D. Ewing, PLS on 8/20/2001 at 12:24 PM

This all leads to the question of why can't the HP software be used if as Bob says, "With OTF/Kinematic surveys one might not input a series of point numbers during field collection, like we do with Stop & Go, or Static observations."

Couldn't you input a number at the start and ending points and let Soluions solve the in between vectors ??
Or am I missing something ?

Jimbo

Jimbo,

Because of the way Solutions was designed, if there isn't a site ID, it doesn't write a vector to the project file, even though it computes them all for kinematic. The Survey Control II software takes care of this, writing a D-file that will process all of the vectors (and write them to the project file).

Regards,
Brian

What I understand from the foregoing is that I need a new handheld controller,not the HP48 that I have now.

Ahhh, but can the D-file be edited in such a way as to direct the the processor to make a point every 5 seconds? in OTF.