Development and progress of static positioning in measurement principles

Development and Progress of Static Positioning Measurement Principles: From Basic Concepts to Practice
Introduction:
The static positioning measurement principle is a method of measuring specific objects or individuals relative to other A method of determining the absolute position of an object given its position. In the past few decades, with the continuous advancement of technology and the growth of application requirements, static positioning measurement principles have made significant developments and progress. This article will start from the basic concepts of static positioning measurement, discuss its development process, and give some specific code examples, in order to help readers better understand the application and practice of static positioning measurement principles.

1. Basic concepts of static positioning measurement
Static positioning measurement is to calculate the absolute position of the object to be positioned by measuring the relative position relationship between the object to be positioned and the known object. Its basic concepts include measurement systems, reference points, observation quantities, etc.

1. Measurement system
   Static positioning measurement relies on a measurement system that can receive and analyze information from sensors and calculate the absolute position of the object to be located. Commonly used measurement systems include Global Positioning System (GPS), laser rangefinder, radar, etc.
2. Reference point
   The reference point is the reference point or known position point for determining the position of the object to be located. Through the measurement and calculation of the reference point, the actual position of the object to be positioned can be calculated based on its positional relationship with the object to be positioned.
3. Observation quantity
   The observation quantity refers to the actual measured distance, angle, orientation and other information between the object to be positioned and the reference point. Observed quantities can be obtained through sensor measurements and processed and calculated by the measurement system.

2. The development history of static positioning measurement principles

1. Traditional static positioning measurement
   Early static positioning measurement mainly relied on traditional measuring instruments and methods, such as using Triangulation, rangefinder, etc. for measurements. This method requires setting a reference point in advance and determining the position of the object to be located through multiple measurements and calculations.
2. Application of Global Positioning System (GPS)
   The emergence of Global Positioning System (GPS) has greatly changed the way of static positioning measurement. By receiving satellite signals, GPS can provide global positioning, navigation and timing services. GPS not only provides high-precision static positioning measurements, but also has real-time dynamic positioning capabilities, and is widely used in aviation, navigation, geological exploration and other fields.
3. Application of laser rangefinder
   Laser rangefinder uses the reflection time of laser pulse to measure the distance between the object to be located and the reference point. With the development of laser technology, laser rangefinders have been widely used in construction, mapping, engineering surveying and other fields. High-precision static positioning measurement can be achieved through precise measurement by laser rangefinder.

3. Application and practice of static positioning measurement principles

1. GPS static positioning measurement
   As a global positioning system, GPS is widely used in static positioning measurement field. When using GPS for static positioning measurements, you first need to set up a receiving antenna on the object to be positioned, and obtain observations by receiving satellite signals. Then, the received satellite signals are transmitted to the measurement system for processing and calculation, and finally the absolute position of the object to be located is calculated.
2. Laser rangefinder static positioning measurement
   Using a laser rangefinder for static positioning measurement requires setting a reference point in advance and aligning the laser rangefinder with the object to be located and the reference point. By measuring the reflection time of the laser pulse, the distance between the object to be positioned and the reference point can be obtained. By measuring the distances of multiple reference points and then performing calculations, the actual position of the object to be located can be calculated.

Specific code examples:
The following is a sample code using Python language to perform static positioning measurement through GPS:

import serial
import pynmea2

# 设置串口
port = '/dev/ttyUSB0'
baudrate = 4800

# 读取并解析GPS数据
def read_gps_data():
    with serial.Serial(port, baudrate) as ser:
        while True:
            line = ser.readline().decode('utf-8')
            if line.startswith('$GPGGA'):
                msg = pynmea2.parse(line)
                # 解析经纬度
                latitude = msg.latitude
                longitude = msg.longitude
                print(f'Latitude: {latitude}, Longitude: {longitude}')
                break

# 执行静态定位测量
def static_positioning():
    read_gps_data()

if __name__ == '__main__':
    static_positioning()

This sample code uses the pynmea2 library to parse GPS data through the serial port Read the data sent by the GPS module and extract the latitude and longitude information for printing. Readers can make corresponding adjustments and expansions according to their actual situations.

Conclusion:
With the continuous advancement of technology and the growth of application requirements, the principle of static positioning measurement has made significant development and progress. Static positioning measurements are widely used in various fields, from traditional triangulation to the application of Global Positioning System (GPS) and laser rangefinders. By using specific code examples, we hope that readers can better understand the application and practice of static positioning measurement principles and apply them in actual work.

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