investigating space radiation
Using Space Radiation Shielding Made of Polyethylene Instead of Aluminum in GEO Orbit to Reduce Weight

Pedram Hajipour; Leila mohammadi; Azam Eidi; Sara Shoorian; Nahid Eidi Esfiani; Seyed Amir Hossein Feghhi

Volume 16, Issue 4 , December 2023, , Pages 15-27

Abstract
  One of the damaging factors for the proper functioning of telecommunication payloads are high energy ionizing particles in space, which the use of proper shield is a way to deal with it. In the design of protection, several factors, such as the type of part and the amount of weight acceptable for the ...  Read More

investigating space radiation
Studying the Effects of Multi-Layer Shielding in Reducing Space Radiations Exposure of Human and Electrical Components in Space Missions

Sarah Shoorian; S. Amir Hossein Feghhi; Hamid Jafari; Reza Amjadifard

Volume 16, Issue 2 , June 2023, , Pages 19-26

Abstract
  Protection of astronauts and electronic components in satellites and spacecraft against space rays is one of the most important primary requirements in space missions. In this work, the effect of three materials, aluminum, as the most common material, polyethylene and a graded-z structure, in the protection ...  Read More

investigating space radiation
Investigating the Test and Evaluation of GaN Transistors Radiation Resistance in SSPA Amplifier Board in LEO Satellite Payload

Roghieh Karimzadeh Baee; Hamideh Daneshvar; Amir Hossin Ahmadi; Parvin Sojoodi

Volume 16, Issue 1 , March 2023, , Pages 59-74

Abstract
  With the advent of GaN technology, achieving microwave power with high efficiency by solid-state devices has become more available. Therefore, the use of SSPA amplifiers with GaN technology in satellites, especially LEO satellites, has been considered. space radiation can affect the performance and reliability ...  Read More

investigating space radiation
Investigation and feasibility study of using components with different categories from the perspective of radiation damage in LEO and GEO orbits

Hamideh Daneshvar; Azam Eidi; Leila Mohamadi; Reza Omidi; Pedram Hajipour

Volume 14, Issue 4 , December 2021, , Pages 11-23

Abstract
  Space radiation can affect the performance and reliability of components in space systems. This paper focuses on the investigation of three types of radiation damage including ionizing dose, displacement damage, and single event damage using OMERE software. Considering the outputs of this software, how ...  Read More

investigating space radiation
Study of Modeling Parameters in Determination of TID, DD, and SEE Radiation Damages for Satellite in LEO Orbit Using OMERE Software

Hamideh Daneshvar; Masoud Khoshsima; Abolfazl Dayyani

Volume 12, Issue 3 , September 2019, , Pages 63-71

Abstract
  One of the important issues to be considered in the design of space systems is the attention to the difference between the terrestrial and space environment. This issue changes the design and affects all subsystems of space systems. Radiation damage due to space radiation can cause disturbances in the ...  Read More

Alterations in Blood Cells Due to Increased Exposure in Space

A. Movafeghi; E. Yahaghi; N. Mohammadzadeh

Volume 6, Issue 2 , July 2013, , Pages 43-48

Abstract
  Cosmic rays in the atmosphere can cause leukemia and other diseases in the astronauts. Changing in microgravity weight make some unwanted effects on cells of the immune system and hematopoiesis. However, the activity of the body organisms is random in different people, but it can be simulate by special ...  Read More

SEU Rate and Reliability Analysis in LEO Satellites

Reza Omidi Gosheblagh; Karim Mohammadi

Volume 5, Issue 3 , October 2012, , Pages 1-9

Abstract
  Due to high design and launch cost of satellites, their failure probability should be minimized. Single Event Effects (SEUs) are one of the most common error sources in satellite microelectronic. To cope with these unwanted errors, various techniques are used. The reliability analysis of these methods ...  Read More