The model of accuracy of a local radio navigation system considering unstable performance of individual elements

Abstract

ground (GPL) pseudolites, a network of control stations (CS) and a consumer segment (Fig. 1). The GPL network creates a continuous navigation field for consumers above the ground (planes, helicopters and, in fact, air pseudolites). The APL network creates similar field for ground (terrestrial) consumers. As for any navigation system, a topical issue for LRNS is a problem of the accuracy of determining the location of moving objects, and since in addition to the location determining these systems allow defining parameters of speed, then, in general, we can talk about the state vector of the consumer. The given problem acquires even greater relevance for the systems of special purpose (military, emergency services, etc.), which operate under challenging

Model of Control in a UAV Group for Hidden Transmitters Detection on the Basis of Local Self-Organization

“…The inclusion of virtual leaders in the schemes implies that there may not be a real drone leader in the system. Such a leader can only be modeled by appropriate means to improve the properties of the system [19].…”

The Model of Localization Precision for Detection of Hidden Transmitters

“…This can be useful in the case of localization of hidden transmitters not in one building but in a group of buildings. At the same time, the proposed system topology does not allow achieving the minimum GDOP value, which for 4 antennas should be 1.41 [5]. With such a GDOP value, the minimum achievable precision value could be equal to 0.705 m, but the poor topology of the receiving and transmitting antennas does not allow achieving this result.…”

“…A. The basic approach to the model of localization precision As the main measurement parameter in the model, it is advisable to use pseudorange (PR) from the receiving antenna to the hidden transmitter [5]. DOP -Dilution of Precision is used to estimate the precision of the transmitter localization to determine the precision of the range parameter.…”

Localization of the Illegal Information Acquisition on the Basis of the Based on the Method of Least Squares

“…У [3] описаний метод «акустичної зав'язки». Він ґрунтується на тому, що в пошуковій апаратурі (індикаторі поля, універсальному пошуковому приладі та т.п.)…”

“…У сучасних приладах вимірювання відстані до ЗНОІ помилка складає 10 ... 20 см. [3] Принцип відмінно працює при пошуку і локалізації аналогових ЗНОІ, які працюють у постійному режимі. Для локалізації цифрових ЗНОІ, особливо з імпульсною передачею інформації (ЗНОІ з накопиченням інформації та передачею в імпульсному режимі), цей принцип не працює, зважаючи на відносно велику тривалість пеленгації, коли час локалізації перевершує час роботи ЗНОІ.…”