ANALISIS OPTIMALISASI KETELITIAN PENGUKURAN STATIK MENGGUNAKAN JARING RADIAL

Determining a position has progressed quite rapidly, this progress is of course closely
related to the increasing development of satellite-based positioning technology, one of which
is the Global Navigation Satellite System (GNSS). The GNSS system has developed along
with advances in science and technology so that it can now capture signals from GPS,
Galileo, Beidou and Glonass satellites. GNSS surveys have several methods, namely rapid
static, stop and go, real time, and pseudo kinematic. One method that is often used is the
Static method, there are many activities that require the implementation of static GNSS
observations, one of which is for measuring Ground Control Points (GCP).
In this research, measurements were carried out in Gunung Sitoli City, North Sumatra
using a static method with radial net mode to determine the comparison between 2 different
schemes, namely the 15 point and 20 point GCP schemes. The data processing process for
this research was carried out using Eoffice software, which is special software that can only
be used to process data from Efix Geodetic GPS. Accuracy analysis was carried out using
Fisher's test and based on horizontal vertical accuracy. Based on the results of the Fisher
test, it shows that there is no significant difference between schemes A & B. Meanwhile,
analysis based on the horizontal vertical accuracy of the 15 GCP point A scheme has better
horizontal accuracy and vertical accuracy than the 20 GCP point B scheme with an average
horizontal accuracy of 0. 00566 and Vertical 0.0074 in scheme A and horizontal accuracy
0.00772 and vertical 0.00697 from scheme B. Both schemes have DOP values with an
average of HDOP 1.3, VDOP 0.6 and PDOP 1.1 which are included in ideal criteria.
Keywords: GNSS, Static Method, GCP