How can you ensure quality GPS data for GIS analysis in adverse weather?

2 Plan your GPS survey

Before you head out to collect GPS data in adverse weather, you should plan your survey carefully in order to avoid any delays, errors, or risks. This includes checking the weather forecast and satellite availability for your survey area and time, selecting the best location and time for your survey, and choosing the appropriate GPS settings and modes. Additionally, you should prepare your GPS equipment and accessories such as batteries, cables, antennas, mounts, and protective cases. Finally, it's important to test your GPS device and data transfer before leaving the office.

3 Follow GPS data collection guidelines

To ensure quality GPS data collection in adverse weather, you should turn on your GPS device and wait for it to acquire a sufficient number of satellites and a good signal strength. Record your GPS data at regular intervals or distances, depending on your survey method and purpose, and use waypoints, tracks, or routes to mark your GPS data points, lines, or areas. Additionally, label your GPS data with descriptive names, codes, or attributes that can help you identify and organize them later. Make sure to avoid moving or shaking your GPS device while recording data, as this can introduce errors or gaps. You should also check your GPS data quality and accuracy on your device screen or with a handheld software tool before saving and backing up your GPS data securely.

4 Process and validate your GPS data

After you have collected your GPS data in adverse weather, it is important to process and validate them before using them for GIS analysis. This will help you to correct any errors, inconsistencies, or outliers that may have occurred during data collection. To ensure quality GPS data for GIS analysis in adverse weather, it is important to transfer your GPS data from your device to your computer or cloud storage and convert it to a compatible format and coordinate system for your GIS software. Additionally, applying differential correction or post-processing techniques can improve accuracy and precision. Additionally, you should review and edit the data, removing any duplicates, anomalies, or irrelevant information. It is also important to compare and cross-check the GPS data with other sources of information such as maps, aerial photos, or field notes. Finally, document and metadata your GPS data describing their source, method, quality, and limitations. Following these tips and best practices will help you gain valuable insights and solutions for many GIS applications.

5 Here’s what else to consider

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