The study [2] shows that employing a pulsed Nd:YAG laser at 532 nm as source, SiPM was shown to be used for elastic-backscatter aerosol LiDAR with a comparable performance to photomultiplier tubes (PMTs). Another researches [1; 19] are conducted to show the capability of SiPM both photon-counting and analog mode whose performance is compared with PMT for atmospheric applications. In this study, the backscattering coefficients was also successfully demonstrated for both modes. The SiPM, in terms of overall SNR, was already proven to exhibit better performance in TOF measurements when compared with an APD [3] which demonstrates outdoor experiments from a distance of 360 m with an SNR of 22. The SNR of the SiPM was higher by at least one order of magnitude than the SNR of the APD in every condition. In regard to laser source of LRF systems, solid-state lasers are usually preferred, especially for the long-range (>5 km) operation because of available high pulse energies (e.g., up to several mjoules) as well as better beam parameters in comparison to those of semiconductor lasers. However, solid-state lasers impose several drawbacks that prevent them for many practical applications; among drawbacks are high cost, large size, low efficiencies and high electric power consumption. On the other hand, semiconductor lasers, despite of their limited pulse energies (i.e., a few \(\mu\)joules), promise many practical advantages such as low cost, small volume, ease of integration, high efficiency and low electrical consumption as well as the capability of high-speed modulation. Semiconductor lasers have also some inherent shortcomings such as elliptical beam shapes with fairly large divergence angles and high astigmatism, yet these issues can be managed by proper optic design such as using cylindrical lenses or anamorphic prisms in the Tx and Rx optics for long-range applications. Thus, semiconductor lasers can be used with SiPMs with appropriate optical design to enable a long-range LRF system with cost-effective and small size features as well as an eye-safe capability at 0.9 \(\mu\)m band owing to the capability of low power detection for SiPMs. Here, we report on such a LRF system using commercially available SiPM with multi-pixel architecture and peak power of 90 Watt at 1 kHz and 100 ns for a relatively long-range detection range of >1 km. An experiment showed that a 3 dB improvement in SNR was obtained by the help of a signal extraction algorithm. In the past two decades, SiPMs have been extensively considered in highly sensitive detection applications due to their low operating voltage, high gain, high photon detection efficiency, photon number resolving capability. SiPMs have rapidly gained attention owing to their superior sensitivity, high gain along with multi-pixel architecture as well as ideal cost and size features. They were first aimed to be used as an alternative to a conventional PMT in nuclear applications [20; 21]. The SiPM has its own unique performance characterized by the dark count rate (DCR), photon detection probability, hold-off time and after pulsing effects [13; 22; 23]. SiPMs have now been utilized for a wide range of applications such as LiDAR [24], fluorescence light detection in biology and physics [25; 26], high-energy physics [27], quantum optics [28; 29] and medical purposes [30; 31; 32]. The SiPM consists of a dense array of small microcells (SPADs) functioning in Geiger-mode, each one with its integrated passive quenching resistors. These cells are arrayed in a matrix form and connected in parallel, making a common anode and cathode [33]. When a microcell in the SiPM is activated by the absorbed photon, Geiger avalanche is initiated giving rise to a photocurrent to flow through the microcell. The sum of the photocurrents from each of these individual microcells combines to give an analog output and reading out from anode or cathode is referred to as the standard output [33].