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Description and Characteristics of the Radio Path of a Satellite-Based Radar Altimeter

D. S. Borovitsky, A. E. Zhesterev, V. P. Ipatov, R. M. Mamchur

Transactions of IAA RAS, issue 42, 32–40 (2017)

Keywords: Satellite altimeter, echo-signal, power profile, maximum likelihood estimate, time discriminator, modulation mode.

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Abstract

Theoretical aspects of designing a satellite-based radar altimeter to work as a part of the space mission for remote monitoring of the Earth are discussed. Approaches to the choice of the carrier frequency of the transmitted pulse are analуzed. The analytical model of the echo-signal mean power is described which combines formal compactness with a sufficient accuracy and retains only the details substantial to create algorithms of the reliable extraction of the necessary information directly onboard the satellite. Potential altimeter tactical characteristics are presented taking into account a fluctuation nature of the received echo-signal observed against the Gaussian noise. Optimal and quasi-optimal structures of the tracking loop time discriminators are compared. Finally, recommendations as for the choice of a modulation mode of the probing signal are given.

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D. S. Borovitsky, A. E. Zhesterev, V. P. Ipatov, R. M. Mamchur. Description and Characteristics of the Radio Path of a Satellite-Based Radar Altimeter // Transactions of IAA RAS. — 2017. — Issue 42. — P. 32–40. @article{borovitsky2017, abstract = {Theoretical aspects of designing a satellite-based radar altimeter to work as a part of the space mission for remote monitoring of the Earth are discussed. Approaches to the choice of the carrier frequency of the transmitted pulse are analуzed. The analytical model of the echo-signal mean power is described which combines formal compactness with a sufficient accuracy and retains only the details substantial to create algorithms of the reliable extraction of the necessary information directly onboard the satellite. Potential altimeter tactical characteristics are presented taking into account a fluctuation nature of the received echo-signal observed against the Gaussian noise. Optimal and quasi-optimal structures of the tracking loop time discriminators are compared. Finally, recommendations as for the choice of a modulation mode of the probing signal are given.}, author = {D.~S. Borovitsky and A.~E. Zhesterev and V.~P. Ipatov and R.~M. Mamchur}, issue = {42}, journal = {Transactions of IAA RAS}, keyword = {Satellite altimeter, echo-signal, power profile, maximum likelihood estimate, time discriminator, modulation mode}, pages = {32--40}, title = {Description and Characteristics of the Radio Path of a Satellite-Based Radar Altimeter}, url = {http://iaaras.ru/en/library/paper/1742/}, year = {2017} } TY - JOUR TI - Description and Characteristics of the Radio Path of a Satellite-Based Radar Altimeter AU - Borovitsky, D. S. AU - Zhesterev, A. E. AU - Ipatov, V. P. AU - Mamchur, R. M. PY - 2017 T2 - Transactions of IAA RAS IS - 42 SP - 32 AB - Theoretical aspects of designing a satellite-based radar altimeter to work as a part of the space mission for remote monitoring of the Earth are discussed. Approaches to the choice of the carrier frequency of the transmitted pulse are analуzed. The analytical model of the echo-signal mean power is described which combines formal compactness with a sufficient accuracy and retains only the details substantial to create algorithms of the reliable extraction of the necessary information directly onboard the satellite. Potential altimeter tactical characteristics are presented taking into account a fluctuation nature of the received echo-signal observed against the Gaussian noise. Optimal and quasi-optimal structures of the tracking loop time discriminators are compared. Finally, recommendations as for the choice of a modulation mode of the probing signal are given. UR - http://iaaras.ru/en/library/paper/1742/ ER -