Simulation and analysis of the multipath environment of Mars

Abstract

NASA's long-term goals for the exploration of Mars include the use of rovers and sensors which intercommunicate through proximity wireless networks. Elements of the network have a short transmission range, low power requirements, low cost, and a relatively short-life span. The performance of any such wireless network depends fundamentally on the radio frequency (RF) environment. In wireless communication systems, communication engineers are generally concerned with two main radio channel issues: link budget and multipath. We have already reported results concerning the link budget at selected sites on Mars. These results were based on a 2.4 GHz proximity wireless network and simulated RF coverage patterns using high-resolution (11 m/pixel) DEMs of the Gusev Crater and Meridiani Planum regions. This paper presents our current research results regarding the multipath environment at the same selected sites on Mars. Our simulations compute the PDP between an access point and a node taking into account environmental parameters including terrain. With these PDPs, we are able to predict and analyze delay spread statistics which could be used in designing wireless network receivers for use on Mars' surface.

RF Propagation Model for Wireless Sensor Network of MARs

“…at the point on the sphere. The equation of free-space loss (1) gives the power received from the antenna at a given distance [7]. The objective is to make use of the line of sight propagation techniques up to a few hundred meters for small distances.…”

“…The network components have a limitedrange oftransmission, low power consumption, low price and a small lifespan. A wireless network's performance is mainly dependent on the RF environment [1]. The Wireless Sensor Network is prepared to deploy on the Mars surface that capable of operating under harsh environmental conditions to detect some soil properties i.e.…”

“…Kikkertdiscuss the fundamental radio propagation principles and propose a new model for radio propagation of wireless networks with high-range sensors [5]. Chukkala et al provided simulation of the Mars Radio Frequency (RF) environment [1]. Pabari et al explain the new radio propagation model for the moon [6].…”

Probability of data loss between mars tumbleweed rovers

“…The goal of NASA, for the explo only specialized rovers that serve a the use of low-cost rovers and sen agrigate this data through wireless s in this type of network should have low power requirements, low cost, and low reliability [14].…”

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