ANALYTICAL OVERVIEW OF WORKS ON HIGH PRECISION ANGLE MEASUREMENT INSTRUMENTS
---
paper_title: Single-isotope laser gyro.

paper_content:

A single-isotope He-Ne laser gyro has been constructed and operated, and the results have been compared with those obtained from a multi-isotope system. Strong mode competition in the single-isotope ring laser has been found in a region 10-30 MHz near line center. The sense of the mode competition has been found to depend on the direction of rotation of the laser cavity. Hence, by mechanical dithering of the laser, the time-averaged effect of the mode competition can be zero. However, with a current unbalance, a large dispersion-type null shift is found near line center. Unlike the linear laser and the multi-isotope ring laser, the single-isotope ring laser is characterized by strong mode competition such that only a single longitudinal mode oscillates over most of the free spectral range.
---

Title: ANALYTICAL OVERVIEW OF WORKS ON HIGH PRECISION ANGLE MEASUREMENT INSTRUMENTS

Section 1: Introduction
Description 1: This section introduces the importance and application of angle transducers in navigation instruments used in control systems of various vehicles.

Section 2: Studies and Publications Overview
Description 2: This section highlights the lack of systemic analysis in the literature concerning high precision angle measurement instruments.

Section 3: Terms of Reference
Description 3: This section provides an overview of achievements and advancements in high precision angle measurement instruments, detailing various types of transducers and their specifications.

Section 4: Ukrainian goniometers with visual targeting and reading
Description 4: This section discusses precision goniometers manufactured by companies in Ukraine, Germany, and the UK, focusing on their specifications and functionalities.

Section 5: Automatic goniometers in the world market
Description 5: This section reviews automatic goniometers available in the global market, describing their advanced features, automation capabilities, and accuracy improvements.

Section 6: Dynamic laser goniometer IUP-1L
Description 6: This section details the next generation of speed angle measurement systems developed by St. Petersburg Electrotechnical University, including their design and applications.

Section 7: Discussion
Description 7: This section summarizes the achievements in the field, noting the variations in accuracy and price among the different instruments discussed.