differential correction


Also found in: Acronyms.

differential correction

[‚dif·ə′ren·chəl kə′rek·shən]
(astronomy)
A method for finding from the observed residuals minus the computed residuals (O - C) small corrections which, when applied to the orbital elements or constants, will reduce the deviations from the observed motion to a minimum.
References in periodicals archive ?
It should be noted that Pharos GPS receivers cannot mask for PDOP and do not collect files suitable for differential correction. As indicated in Table 1, the lack of the ability to differentially correct the data is reflected in the relatively large decrease in accuracy compared to its precision.
Private companies have set up their own differential correction systems, such as Deere and Co.'s StarFire.
The regression equations that related the elevations measured with the Trimble AgGPS [TM] 132 receiver (y) with the differential correction turn on to benchmark elevations (x) were:
Accuracy of GPS telemetry collar locations with differential correction. Journal of Wildlife Management 61:530-539.
The basestation, used to improve the accuracy of positions collected in the field through differential correction, is located in a room within the Geography Building.
Differential correction allows the trucks to accurately navigate haul roads.
This same differential correction can be applied to any rover receiver tracking the same satellites at that instant in time.
Tenders are invited for Supply of GNSS (Global Navigation Satellite System) Receivers along with integrated Antenna, Field Data Collector (Controller), Field Data Collection Software, Real Time Satellite Differential Correction Service like Omni Star/Star fire/Other equivalent for eight years with 10 cm accuracy and inclusive of all their accessories.
- Item No 3 - Software activation of 1 (one) Real Time Differential Correction Option in DGPS Base Station GNSS Receiver Trimble R8s according to Technical Specification with EAD-27 / 2017d.
Open Competition: The Right To Conclude The State Contract To Perform Works On The Project: Introduction Of Consumer Navigation Equipment And Traffic Control Systems, Railway Vehicles Using Glonass / Gps Systems, Including Wideband And Local Differential Correction Systems, Code: Snc-Train
Augmentation System (WAAS), European Geostationary Navigation Overlay Service (EGNOS), Japanese Multi-functional Satellite Augmentation System (MSAS) and QZSS, Indian GPSAided Geo Augmented Navigation (GAGAN) and the System of Differential Correction and Monitoring (SDCM), increasing reliability in GPS challenged environments.
These are things such as the Ordnance Survey's OS Net, which provides differential corrections to GNSS signals (such as GPS) to bring that GNSS location provision down to sub-metre accuracy.

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