A New Technology in Remote Sensing: Lidar

Öz

In this era, different kinds of sensing systems are still developing aiming to cover rapidly increasing geographic information necessities. One of these sensing systems is the LIDAR Light detection and ranging system which become popular especially last ten years. LIDAR, an abbreviation for airborne laser scanning systems or also just for laser scanning systems, offers new opportunities to make the measurements in difficult areas like energy transporting lines, city centrum’s and forestry areas. In this paper, it is emphasized firstly the technical properties of Lidar system, then a comparison is made between Lidar and the other remote sensing systems. After that, the advantages and the areas of usage of the system are explained item by item. Before the explanations about the future expectations, the advantages and the disadvantages of the Lidar system and passive optic sensing systems are compared. It is firmly believed that this paper will be beneficial about researching and representing of these kind of methods of remote sensing especially from the point of view about the scientific infrastructure. Finally it would be fair to say that the airborne laser scanning systems have a great potential to acquire and to evaluate geo-referenced data.

Anahtar Kelimeler

• Lidar, Airborne Laser Scanning Systems, Laser Scanning Systems

Uzaktan Alg›lamada Yeni Bir Teknoloji: Lidar

Öz

Günümüzde hızla artan coğrafi bilgi gereksinimini karşılamakamacıyla çeşitli algılama sistemleri geliştirilmiştir. Bunlardan birisi de özellikle son on yılda popüler olan Lidar Light detectionand ranging sistemidir. Uçaktan lazerle tarama sistemleri Airborne laser scanning systems ya da lazer tarama sistemleri Laser scanning systems olarak da adlandırılan Lidar, şehir merkezleri, ormanlık alanlar ve enerji nakil hatları gibi, ölçmelerin güçlükle yapılacağı bölgeler için yeni imkanlar sunmaktadır.Bu makalede Lidar sisteminin teknik özellikleri, algılama sistemleri arasındaki konumu, kullanım alanları ve avantajları belirtilmiştir. Pasif optik algılayıcılar ile avantaj ve dezavantaj yönünden karşılaştırıldıktan sonra, Lidar sisteminden gelecekteki beklentiler açıklanmıştır

Anahtar Kelimeler

• Lidar, Uçaktan Lazerle Tarama Sistemleri, Lazer Tarama Sistemleri

Kaynakça

1. ACKERMANN F.: Airborne Laser Scanning - Present Status and Fu- ture Expectations, ISPRS Journal of Photogrammetry & Remote Sensing, 54, (1999), 64-67, London.
2. AXELSSON P. : Processing of Laser Scanner Data - Algoritms and Applications, ISPRS Journal of Photogrammetry & Remote Sensing, 54, (1999), 138-147, London.
3. BALTSAVIAS E. P.: A Comparison Between Photogrammetry and Laser Scanning, ISPRS Journal of Photogrammetry & Remote Sen- sing, 54, (1999), 83-94, London.
4. LEMMENS M. ve LOHANI B.: Geoinformation From Lidar, GIM In- ternational, 15, (2001), 30-33, Netherlands.
5. LILLESAND T. M. ve KIEFER R. W. : Image Processing and Interpre- tation, John Wiley and Sons, New York, 1987.
6. ÖRMECİ C. : Uzaktan Algılama Temel Esaslar ve Algılama Sistemle- ri, İTÜ, İstanbul, 1987.