Over-all adjustment of Madagascar's first order geodetic network

Abstract

Madagascar possesses a geodetic network covering approximately 63% of its territory, initially established for mapping purposes. While the network has served its primary function, improvements and a comprehensive precomputations are necessary to meet modern precision standards. This document outlines the steps to achieve this goal, detailing the historical development of the network, its current state, and the planned adjustments. The geodetic network in Madagascar was initiated in 1924 under Colonel Laborde, who employed a simplified "link method" for computation. The comprehensive adjustment aims to achieve a homogeneous precision across the entire territory, ensuring a relative precision of 1:50,000. This will involve dividing the network into five main blocks for computation, using the liaison equations method to treat the network as a single unit.