title: Ð¢ÑÐµÐºÐ¸Ð½Ð³ ÑÐ¿ÑÑÐ½Ð¸ÐºÐ¾Ð² Ð² snapshot-Ð¿ÑÐ¸ÐµÐ¼Ð½Ð¸ÐºÐ°Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Tracking satellites in snapshot receivers
Creators: name: ÐÐ°ÑÑÐ¸Ð½, ÐÐ»ÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: GPS
ÐÐÐ¡Ð¡
CA-ÐºÐ¾Ð´Ñ
Ð¿ÐµÑÐ»ÐµÐ²ÑÐµ ÑÑ ÐµÐ¼Ñ Ð°Ð²ÑÐ¾Ð¿Ð¾Ð´ÑÑÑÐ¾Ð¹ÐºÐ¸
ÑÐ¾ÑÐµÑÐ½ÑÐ¹ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼ Ð¾ÑÐµÐ½ÐºÐ¸
ÑÐ¸Ð½Ñ ÑÐ¾Ð½Ð¸Ð·Ð°ÑÐ¸Ñ Ð¿Ð¾ Ð²ÑÐµÐ¼ÐµÐ½Ð¸ Ð¸ ÑÐ°ÑÑÐ¾ÑÐµ
GNSS
CA-codes
loop auto-tuning schemes
point estimation algorithm
time and frequency synchronization

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð° Ð¿Ð¾Ð´Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ñ ÑÐ¸Ð½ÑÑÐ¾Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¿Ð¾ Ð²ÑÐµÐ¼ÐµÐ½Ð¸ Ð¸ ÑÐ°ÑÑÐ¾ÑÐµ Ð¿ÑÐ¸ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐµ ÐºÐ¾ÑÐ¾ÑÐºÐ¸Ñ Ð¿ÑÐµÑÑÐ²Ð¸ÑÑÑÑ Ð·Ð°Ð¿Ð¸ÑÐµÐ¹ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² ÐÐÐ¡Ð¡ GPS. ÐÐ¾ Ð²ÑÐµÐ¼Ñ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð° Ð¿Ð¾ÑÑÑÐ¾ÐµÐ½Ð° Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ Ð´Ð»Ñ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÐºÐ¸ Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ ÑÐ¿ÑÑÐ½Ð¸ÐºÐ° Ð¸ Ð¿ÑÐ¸ÑÐ¼Ð½Ð¸ÐºÐ°. Ð¡ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð¼Ð¾Ð´ÐµÐ»Ð¸ Ð±ÑÐ»Ð¸ Ð¿Ð¾Ð»ÑÑÐµÐ½Ñ ÑÐ»ÐµÐ´ÑÑÑÐ¸Ðµ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÑ: Ð¼Ð°ÐºÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½ÑÐ¹ ÑÑÐ¾Ð´ ÑÐ¸Ð½ÑÑÐ¾Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¿Ð¾ ÑÐ°ÑÑÐ¾ÑÐµ, Ð¼Ð°ÐºÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð°Ñ ÑÐºÐ¾ÑÐ¾ÑÑÑ ÑÑÐ¾Ð´Ð° Ð¿Ð¾ ÑÐ°ÑÑÐ¾ÑÐµ, Ð¼Ð°ÐºÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð°Ñ ÑÐºÐ¾ÑÐ¾ÑÑÑ ÑÑÐ¾Ð´Ð° Ð¿Ð¾ Ð²ÑÐµÐ¼ÐµÐ½Ð¸. ÐÑÐ»Ð¸ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð´Ð²Ð° Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð° ÑÐ¸Ð½ÑÑÐ¾Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸: Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸ÐµÐ¼ ÑÐ¾ÑÐµÑÐ½Ð¾Ð¹ Ð¾ÑÐµÐ½ÐºÐ¸ Ð¸ Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸ÐµÐ¼ Ð¿ÐµÑÐ»ÐµÐ²ÑÑ ÑÑÐµÐ¼ Ð°Ð²ÑÐ¾Ð¿Ð¾Ð´ÑÑÑÐ¾Ð¹ÐºÐ¸. Ð¡ÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸Ð»Ð¾ÑÑ Ð¿Ð¾ ÐºÑÐ¸ÑÐµÑÐ¸Ñ Ð¼Ð¸Ð½Ð¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¡ÐÐ Ð¸ÑÑÐ¸Ð½Ð½ÑÑ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² ÑÐ¸Ð½ÑÑÐ¾Ð½Ð¸Ð·Ð°ÑÐ¸Ð¹ Ð¿Ð¾ Ð²ÑÐµÐ¼ÐµÐ½Ð¸ Ð¸ ÑÐ°ÑÑÐ¾ÑÐµ Ð¾Ñ Ð¾ÑÐµÐ½Ð¸Ð²Ð°ÐµÐ¼ÑÑ Ð² ÑÑÐ»Ð¾Ð²Ð¸ÑÑ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ð¹ Ð¾ÑÐ½Ð¾ÑÐµÐ½Ð¸Ñ ÑÐ¸Ð³Ð½Ð°Ð»/ÑÑÐ¼ Ð¸ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²Ð° Ð½Ð°ÐºÐ°Ð¿Ð»Ð¸Ð²Ð°ÐµÐ¼ÑÑ ÑÐµÐ¿Ð»Ð¸Ðº ÑÐ¸Ð³Ð½Ð°Ð»Ð°. ÐÐ¾Ð»ÑÑÐµÐ½Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ, ÑÐºÐ°Ð·ÑÐ²Ð°ÑÑÐ¸Ðµ Ð½Ð° ÑÐ¾, ÐºÐ°ÐºÐ¾Ð¹ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼Ð¾ Ð²ÑÐ±Ð¸ÑÐ°ÑÑ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼ Ð² Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐ¸ Ð¾Ñ ÑÑÐ»Ð¾Ð²Ð¸Ð¹ Ð·Ð°Ð¿Ð¸ÑÐ¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð°, ÑÐ¾ ÐµÑÑÑ Ð´Ð»Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼ÑÑ Ð¾ÑÑÐµÐ·ÐºÐ¾Ð² ÑÐ¸Ð³Ð½Ð°Ð»Ð° Ð¸ Ð²ÐµÐ»Ð¸ÑÐ¸Ð½Ñ Ð¸Ð½ÑÐµÑÐ²Ð°Ð»Ð° Ð¼ÐµÐ¶Ð´Ñ Ð½Ð¸Ð¼Ð¸.
description: This work is devoted to the development of an algorithm for maintaining synchronization in time and frequency when processing short intermittent recordings of GPS GNSS signals. During the work, a mathematical model was built to describe the dynamics of the satellite and the receiver. Using the model, the following parameters were obtained: the maximum possible frequency synchronization departure, the maximum possible frequency departure rate, and the maximum possible time departure rate. Two synchronization algorithms were considered: with the use of point estimation and with the use of loop auto-tuning schemes. The comparison was carried out according to the criterion of minimizing the true time and frequency synchronization parameters from the estimated values of the signal-to-noise ratio and the number of accumulated signal replicas under conditions of different values. The results obtained indicate which algorithm should be chosen depending on the conditions for recording the signal, i.e., the duration of the considered signal segments and the size of the interval between them.