DÜŞÜK MALİYETLİ İNSANSIZ HAVA ARAÇLARI İÇİN UÇUŞ ÖNCESİ BLOK PLANLAMANIN DEĞERLENDİRİLMESİ

Year 2021, Volume: 5 Issue: 1, 114 - 126, 30.04.2021

Sercan Gülci Hüseyin Yurtseven Mustafa Akgül

https://doi.org/10.32328/turkjforsci.856994

Cited By: 1

Abstract

Son yıllarda geliştirilen düşük maliyetli insansız hava araçları (İHA) ve yazılımlar, çok yüksek konumsal çözünürlükte ve kullanıcı tarafından belirlenen aralıklarda düşük maliyetli görüntüleme imkanı sunmaktadır. Ormancılık ile ilgili ölçme ve haritalama kapsamında, dünyada olduğu gibi Türkiye'de de düşük maliyetli İHA talepleri önemli ölçüde artmaktadır. Buna bağlı olarak düşük maliyetli İHA ve sensörleri hızla piyasaya sürülmektedir. Sonuç olarak ürün çeşitliliği hızla artmaktadır. Kullanılan teknikler, yöntemler ve ölçüm araçları İHA ile üretilen verilerin hassasiyetini etkileyen önemli faktörlerdir. Ayrıca, İHA ile elde edilen blok alım kalitesi ve hassasiyeti çevresel faktörlerin yanı sıra uçuş hızı, uçuş yüksekliği ve kullanılan görüntü algılayıcıların özelliklerine bağlı olarak değişmektedir. Bu çalışmada, Structure-from-Motion (SfM) tekniği ile kullanılan düşük maliyetli İHA’nın uçuş öncesi değerlendirilme ve blok alımı planlaması üzerinde durulmuştur. Bu nedenle, İHA'lar ile elde edilen blok alımın bilimsel araştırmalarda ve uygulamalarda istenilen hassasiyeti sağlayabilmek için uçuş öncesi planlama kapsamında irdelenmiştir. Piyasada düşük maliyetli olarak satılan bir İHA (Drone) için beş farklı uçuş öncesi plan hesaplanmıştır. İHA’nın uçuş kapasitesi, üzerindeki sensör özellikleri ve uçuş yükseklikleri arasındaki ilişkiler göz önünde bulundurulmuştur. Sonuç olarak, düşük maliyetli İHA ve üzerine monte edilmiş görüntü sensörünün maksimum ve minimum performansı, birkaç teknik bilgi yardımıyla tahmin edilebilmektedir. Böylece İHA ile elde edilecek veri hassasiyetinin tahmini ve uçuş güvenliği konusunda bilgi sağlanabilir. Bu makale, araştırmalarında düşük maliyetli İHA veya mikro İHA gibi yarı otomatik sistemleri fotogrametrik çalışmalarında kullanmak isteyen uzmanlar veya araştırmacılar için ön kontrol planlamalarına rehberlik etmeyi amaçlamaktadır.

Keywords

Uzaktan algılama, düşük maliyetli İHA, İHA fotogrametrisi, uçuş öncesi planlama, ormancılık

ASSESSMENT OF PRE-FLIGHT BLOCK PLANNING FOR LOW-COST UNMANNED AIR VEHICLES

Abstract

Recent development in low-cost Unmanned Aerial Vehicles (UAVs) and software, which offer low-cost imagining at user defined the aerial photogrammetry is widely preferred for mapping and field measurement purposes because of its time and cost-benefit in various applications. Within the scope of forestry-related surveying and mapping, the demand for low-cost drones in Turkey and the world has increased dramatically. Accordingly, low-cost UAVs and its sensors are rapidly being introduced to the market. Consequently, product varieties increase rapidly. The techniques, methods, and measurement tools used are important factors affecting the sensitivity of the data obtained by the UAVs. Besides, the quality and sensitivity of the block acquisition obtained with UAVs varies depending on the environmental factors as well as the flight speed, flight altitude and the characteristics of sensors. In the present study, low-cost UAV used in the Structure-from-Motion (SfM) studies was evaluated and examined pre-flight block planning scenarios. Hence the block acquisition obtained by UAVs has been explored for the scope of pre-flight planning in order to provide the proper sensitivity in scientific research and applications. Five different pre-flight plans were calculated for a low-cost drone in the market, especially considering the UAV (Drone)’s flight capacity and its sensor feature and flight altitudes. The maximum and minimum performance of the low-cost UAV-mounted image sensor can be estimated with the help of a few technical information. Therefore, it is possible to predict and ensure data sensitivity and flight safety obtained by drones. This article aims to provide a pre-control plan for experts or researchers who tend to use semi-automated systems such as low-cost drones or micro drones in field surveys based on photogrammetry.

Keywords

Remote sensing, low-cost UAV, UAV photogrammetry, pre-flight planning, forestry

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