Estimating wheat yield: an approach for estimating number of grains using cross-polarised ENVISAT-1 ASAR data

Parul Patel; Hari Shanker Srivastava; Ranganath R. Navalgund

doi:10.1117/12.693930

7 December 2006 Estimating wheat yield: an approach for estimating number of grains using cross-polarised ENVISAT-1 ASAR data

Parul Patel, Hari Shanker Srivastava, Ranganath R. Navalgund

Author Affiliations +

Proceedings Volume 6410, Microwave Remote Sensing of the Atmosphere and Environment V; 641009 (2006) https://doi.org/10.1117/12.693930
Event: SPIE Asia-Pacific Remote Sensing, 2006, Goa, India

Abstract

In this paper an attempt to model wheat yield is made by exploiting characteristic interaction of cross-polarised SAR with wheat crop. SAR backscatter from a crop field is affected by the density, structure, volume and the moisture content of various components of plant (viz. head, stem, leaf) alongwith soil moisture. Hence, to effectively handle the influence of each of these components of the plant on SAR backscatter, a plant parameter, termed as Interaction Factor (IF) is conceptualised by combining volume, moisture, height for each of the component and density of plant. For this purpose, detailed experiment over farmers' fields was carried out in synchrony with SAR acquisition involving in-depth measurements on volume, moisture content and height of various components of wheat plant, number of grains, plant density and soil moisture. Stepwise regression analysis revealed that IF_Head significantly affects the shallow incidence angle, cross-polarised C-band SAR backscatter. IF_Head is also highly correlated to the number of grains. This is attributed to the fact that parameters of the wheat head from which IF_Head is calculated, namely moisture, volume and height, determine eventual number of grains. The study offers an approach for estimating wheat yield by retrieving number of grains from shallow incidence angle cross-polarised SAR data.

Citation Download Citation

Parul Patel, Hari Shanker Srivastava, and Ranganath R. Navalgund "Estimating wheat yield: an approach for estimating number of grains using cross-polarised ENVISAT-1 ASAR data", Proc. SPIE 6410, Microwave Remote Sensing of the Atmosphere and Environment V, 641009 (7 December 2006); https://doi.org/10.1117/12.693930

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available